diff --git a/vllm/model_executor/layers/quantization/base_config.py b/vllm/model_executor/layers/quantization/base_config.py
index 2eefcc4f30516..c0d8553c0df1a 100644
--- a/vllm/model_executor/layers/quantization/base_config.py
+++ b/vllm/model_executor/layers/quantization/base_config.py
@@ -2,7 +2,7 @@
 
 import inspect
 from abc import ABC, abstractmethod
-from typing import Any, Dict, List, Optional, Type
+from typing import Any, Dict, List, Mapping, Optional, Type
 
 import torch
 from torch import nn
@@ -59,6 +59,7 @@ def method_has_implemented_embedding(
 
 class QuantizationConfig(ABC):
     """Base class for quantization configs."""
+    packed_modules_mapping: Mapping[str, List[str]] = dict()
 
     @abstractmethod
     def get_name(self) -> str:
diff --git a/vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors.py b/vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors.py
index 1a11b2419cc88..0e3258e4afba0 100644
--- a/vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors.py
+++ b/vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors.py
@@ -83,7 +83,9 @@ def get_quant_method(
 
         # Check if the layer is skipped for quantization.
         # TODO (@robertgshaw2): support module names
-        if should_ignore_layer(prefix, ignore=self.ignore):
+        if should_ignore_layer(prefix,
+                               ignore=self.ignore,
+                               fused_mapping=self.packed_modules_mapping):
             return UnquantizedLinearMethod()
         if isinstance(layer, LinearBase):
             scheme = self.get_scheme(layer=layer, layer_name=prefix)
@@ -379,34 +381,29 @@ def get_scheme(self,
 
         # Will be empty for models with only sparsity
         weight_quant = input_quant = None
-        sparsity_scheme: Optional[SparsityCompressionConfig] = None
         if self.target_scheme_map:
             matched_target = find_matched_target(
                 layer_name=layer_name,
                 module=layer,
-                targets=self.target_scheme_map.keys())
+                targets=self.target_scheme_map.keys(),
+                fused_mapping=self.packed_modules_mapping)
 
             scheme_dict = self.target_scheme_map[matched_target]
             weight_quant = scheme_dict.get("weights")
             input_quant = scheme_dict.get("input_activations")
 
-        if self.sparsity_scheme_map:
-            is_ignored = False
-            with suppress(ValueError):
-                is_ignored = find_matched_target(
-                    layer_name=layer_name,
-                    module=layer,
-                    targets=self.sparsity_ignore_list)
-
-            # if the layer is in the sparsity ignore list,
-            # we should not apply any sparsity scheme
-
-            if not is_ignored:
-                matched_target = find_matched_target(
-                    layer_name=layer_name,
-                    module=layer,
-                    targets=self.sparsity_scheme_map.keys())
-                sparsity_scheme = self.sparsity_scheme_map.get(matched_target)
+        # Find the sparsity scheme of the layer
+        # assume that fused layers inerhit first component's sparsity scheme
+        sparsity_targets = (self.sparsity_scheme_map.keys() -
+                            set(self.sparsity_ignore_list))
+        sparsity_scheme: Optional[SparsityCompressionConfig] = None
+        with suppress(ValueError):
+            matched_target = find_matched_target(
+                layer_name=layer_name,
+                module=layer,
+                targets=sparsity_targets,
+                fused_mapping=self.packed_modules_mapping)
+            sparsity_scheme = self.sparsity_scheme_map[matched_target]
 
         if self.supports_cutlass_24(weight_quant=weight_quant,
                                     input_quant=input_quant,
diff --git a/vllm/model_executor/layers/quantization/compressed_tensors/utils.py b/vllm/model_executor/layers/quantization/compressed_tensors/utils.py
index 4ea79531efe7e..85ae1d5cb7878 100644
--- a/vllm/model_executor/layers/quantization/compressed_tensors/utils.py
+++ b/vllm/model_executor/layers/quantization/compressed_tensors/utils.py
@@ -1,14 +1,12 @@
 # SPDX-License-Identifier: Apache-2.0
 
 import re
-from typing import Iterable, Optional
+from types import MappingProxyType
+from typing import Iterable, List, Mapping, Optional
 
 from compressed_tensors import CompressionFormat
 from torch.nn import Module
 
-from vllm.model_executor.layers.quantization.utils.quant_utils import (
-    FUSED_LAYER_NAME_MAPPING)
-
 
 def is_activation_quantization_format(format: str) -> bool:
     _ACTIVATION_QUANTIZATION_FORMATS = [
@@ -19,8 +17,11 @@ def is_activation_quantization_format(format: str) -> bool:
     return format in _ACTIVATION_QUANTIZATION_FORMATS
 
 
-def should_ignore_layer(layer_name: Optional[str],
-                        ignore: Iterable[str]) -> bool:
+def should_ignore_layer(
+    layer_name: Optional[str],
+    ignore: Iterable[str] = tuple(),
+    fused_mapping: Mapping[str, List[str]] = MappingProxyType({})
+) -> bool:
     if layer_name is None:
         return False
 
@@ -32,8 +33,8 @@ def should_ignore_layer(layer_name: Optional[str],
     # in the safetensors checkpoint. So, we convert the name
     # from the fused version to unfused + check to make sure that
     # each shard of the fused layer has the same scheme.
-    if proj_name in FUSED_LAYER_NAME_MAPPING and layer_name not in ignore:
-        shard_proj_names = FUSED_LAYER_NAME_MAPPING[proj_name]
+    if proj_name in fused_mapping and layer_name not in ignore:
+        shard_proj_names = fused_mapping[proj_name]
 
         # Convert fused_name --> [shard_names]
         shard_names = [
@@ -79,55 +80,12 @@ def check_equal_or_regex_match(layer_name: str,
     return False
 
 
-def _handle_fused_layers(func):
-    """
-    Decorator to handle fused layers by mapping vllm fused layer names
-    to their corresponding unfused layer names for quantization/pruning schemes.
-    """
-    # fused_layer_name -> unfused_layer_name
-    fused_layer_map = {
-        "qkv_proj": "q_proj",
-        "gate_up_proj": "up_proj",
-    }
-
-    def fused_layer_handler(layer_name: Optional[str], module: Module,
-                            targets: Iterable[str]) -> Optional[str]:
-        """
-        Wrapper function specifically designed to support the
-        find_matched_target function.
-
-        It handles cases where the provided layer name corresponds to a
-        fused layer in vllm, mapping it to its equivalent unfused layer name
-        based on the predefined fused_layer_map. If the original layer name
-        raises a ValueError in the wrapped function, this handler
-        will attempt to resolve the issue by substituting with unfused
-        layer name.
-
-        :param layer_name: Name of the layer, which may be fused.
-        :param module: An instance of torch.nn.Module.
-        :param targets: A list of target names or patterns to match.
-        :return: The result of the wrapped find_matched_target function with
-            the resolved layer name.
-        :raises ValueError: If the layer name cannot be resolved to a 
-            valid target.
-        """
-        try:
-            return func(layer_name, module, targets)
-        except ValueError:
-            if layer_name is None:
-                layer_name = ""
-            parent_name, fused_proj_name = layer_name.rsplit(".", 1)
-            unfused_proj_name = fused_layer_map.get(fused_proj_name,
-                                                    fused_proj_name)
-            new_layer_name = f"{parent_name}.{unfused_proj_name}"
-            return func(new_layer_name, module, targets)
-
-    return fused_layer_handler
-
-
-@_handle_fused_layers
-def find_matched_target(layer_name: Optional[str], module: Module,
-                        targets: Iterable[str]) -> str:
+def find_matched_target(
+    layer_name: Optional[str],
+    module: Module,
+    targets: Iterable[str],
+    fused_mapping: Mapping[str, List[str]] = MappingProxyType({})
+) -> str:
     """
     Helper function to look up which "target" in the compressed-tensors
     config that a layer corresponds to.
@@ -141,19 +99,25 @@ def find_matched_target(layer_name: Optional[str], module: Module,
 
     First, we try to match the layer_name with a target
     Second, we try to match the module's name with a target
+    Third, we try to map the layer_name to a list of fused module names.
+        *All* component module names must match in order for a match to be
+        successful. A successful match returns the first component target
 
     :param layer_name: layer name
     :param module: torch.nn.Module
     :param targets: list of targets to match the layer against
+    :param fused_mapping: map from fused layer names to its components
+    :param fused_strategy: either "all" or "any". If using "all", fused
+        layers match if "all" of its components match
     """
 
     if layer_name is None:
         layer_name = ""
 
-    matched_target = (_find_first_match(layer_name, targets)
-                      or _find_first_match(module.__class__.__name__, targets,
-                                           True)
-                      or _match_fused_layer(layer_name, targets))
+    matched_target = (
+        _find_first_match(layer_name, targets)
+        or _find_first_match(module.__class__.__name__, targets, True)
+        or _match_fused_layer(layer_name, targets, fused_mapping))
 
     if matched_target is None:
         raise ValueError(
@@ -205,11 +169,19 @@ def _is_equal_or_regex_match(value: str,
     return False
 
 
-def _match_fused_layer(layer_name: str,
-                       target_layers: Iterable[str]) -> Optional[str]:
+def _match_fused_layer(
+        layer_name: str, target_layers: Iterable[str],
+        fused_mapping: Mapping[str, List[str]]) -> Optional[str]:
     """
     Match a fused layer name to its corresponding individual layer in 
-    target_layers.
+    target_layers. Returns first value in fused_mapping which matches targets
+
+    Implements an "all" matching strategy where a fused layer matches iff
+    "all" of its components match
+
+    :param layer_name: layer name
+    :param target_layers: list of targets to match the layer against
+    :param fused_mapping: map from fused layer names to its components
 
     Examples:
         layer_name = "model.layers.0.self_attn.qkv_proj"
@@ -217,27 +189,25 @@ def _match_fused_layer(layer_name: str,
                         "model.layers.0.self_attn.k_proj",
                         "model.layers.0.self_attn.v_proj"]
     """
-    # Split into parent path and layer type
-    # e.g., "model.layers.0.self_attn" and "qkv_proj"
-    parent_path = ".".join(layer_name.split(".")[:-1])
-    layer_type = layer_name.split(".")[-1]
-
-    if layer_type not in FUSED_LAYER_NAME_MAPPING:
+    # find layer_name in mapping
+    fused = next((key for key in fused_mapping if layer_name.endswith(key)),
+                 None)
+    if fused is None:
         return None
 
-    possible_layer_types = FUSED_LAYER_NAME_MAPPING[layer_type]
-
-    # Look for a target layer that:
-    # 1. Has the same parent path
-    # 2. Ends with one of the possible individual layer types
-    for target in target_layers:
-        is_same_parent = parent_path in target
-        is_matching_type = any(type_suffix in target
-                               for type_suffix in possible_layer_types)
-
-        if is_same_parent and is_matching_type and all(
-            (f"{parent_path}.{type_suffix}" in target_layers)
-                for type_suffix in possible_layer_types):
-            return target
+    # expand path of unfused components
+    unfused_paths = [
+        layer_name.replace(fused, unfused) for unfused in fused_mapping[fused]
+    ]
 
-    return None
+    # for each unfused component, find a match in targets
+    unfused_matches: List[Optional[str]] = []
+    for unfused in unfused_paths:
+        for target in target_layers:
+            if _is_equal_or_regex_match(unfused, target):
+                unfused_matches.append(target)
+                break
+        else:
+            unfused_matches.append(None)
+
+    return unfused_matches[0] if all(unfused_matches) else None
diff --git a/vllm/model_executor/layers/quantization/quark/quark.py b/vllm/model_executor/layers/quantization/quark/quark.py
index 0451cf82b9971..ba123565a0ecc 100644
--- a/vllm/model_executor/layers/quantization/quark/quark.py
+++ b/vllm/model_executor/layers/quantization/quark/quark.py
@@ -18,8 +18,6 @@
     QuarkScheme, QuarkW8A8Fp8, QuarkW8A8Int8)
 from vllm.model_executor.layers.quantization.quark.utils import (
     deep_compare, should_ignore_layer)
-from vllm.model_executor.layers.quantization.utils.quant_utils import (
-    FUSED_LAYER_NAME_MAPPING)
 from vllm.platforms import current_platform
 
 __all__ = ["QuarkLinearMethod"]
@@ -58,7 +56,9 @@ def get_quant_method(self, layer: torch.nn.Module,
 
         # Check if the layer is skipped for quantization.
         exclude_layers = cast(List[str], self.quant_config.get("exclude"))
-        if should_ignore_layer(prefix, ignore=exclude_layers):
+        if should_ignore_layer(prefix,
+                               ignore=exclude_layers,
+                               fused_mapping=self.packed_modules_mapping):
             return UnquantizedLinearMethod()
         if isinstance(layer, LinearBase):
             scheme = self.get_scheme(layer=layer, layer_name=prefix)
@@ -201,8 +201,8 @@ def _find_matched_config(self, layer_name: str,
                              module: torch.nn.Module) -> Dict[str, Any]:
 
         proj_name = layer_name.split(".")[-1]
-        if proj_name in FUSED_LAYER_NAME_MAPPING:
-            shard_proj_names = FUSED_LAYER_NAME_MAPPING[proj_name]
+        if proj_name in self.packed_modules_mapping:
+            shard_proj_names = self.packed_modules_mapping[proj_name]
 
             # Convert fused_name --> [shard_names]
             shard_names = [
diff --git a/vllm/model_executor/layers/quantization/quark/utils.py b/vllm/model_executor/layers/quantization/quark/utils.py
index afb1d9d63e73a..17e0df021085a 100644
--- a/vllm/model_executor/layers/quantization/quark/utils.py
+++ b/vllm/model_executor/layers/quantization/quark/utils.py
@@ -1,10 +1,8 @@
 # SPDX-License-Identifier: Apache-2.0
 
 import re
-from typing import Any, Iterable, Optional
-
-from vllm.model_executor.layers.quantization.utils.quant_utils import (
-    FUSED_LAYER_NAME_MAPPING)
+from types import MappingProxyType
+from typing import Any, Iterable, List, Mapping, Optional
 
 
 def deep_compare(dict1: Any, dict2: Any) -> bool:
@@ -20,8 +18,11 @@ def deep_compare(dict1: Any, dict2: Any) -> bool:
         return dict1 == dict2
 
 
-def should_ignore_layer(layer_name: Optional[str],
-                        ignore: Iterable[str]) -> bool:
+def should_ignore_layer(
+    layer_name: Optional[str],
+    ignore: Iterable[str],
+    fused_mapping: Mapping[str, List[str]] = MappingProxyType({})
+) -> bool:
     if layer_name is None:
         return False
 
@@ -33,8 +34,8 @@ def should_ignore_layer(layer_name: Optional[str],
     # in the safetensors checkpoint. So, we convert the name
     # from the fused version to unfused + check to make sure that
     # each shard of the fused layer has the same scheme.
-    if proj_name in FUSED_LAYER_NAME_MAPPING:
-        shard_proj_names = FUSED_LAYER_NAME_MAPPING[proj_name]
+    if proj_name in fused_mapping:
+        shard_proj_names = fused_mapping[proj_name]
 
         # Convert fused_name --> [shard_names]
         shard_names = [
diff --git a/vllm/model_executor/layers/quantization/utils/quant_utils.py b/vllm/model_executor/layers/quantization/utils/quant_utils.py
index 62484f62f6187..c7ce3a42c81f9 100644
--- a/vllm/model_executor/layers/quantization/utils/quant_utils.py
+++ b/vllm/model_executor/layers/quantization/utils/quant_utils.py
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 """This file is used for /tests and /benchmarks"""
-from typing import List, Optional, Tuple
+from types import MappingProxyType
+from typing import List, Mapping, Optional, Tuple
 
 import numpy
 import torch
@@ -12,14 +13,6 @@
 SUPPORTED_GPTQ_QUANT_TYPES = [scalar_types.uint4b8, scalar_types.uint8b128]
 SUPPORTED_GROUP_SIZES = [-1, 32, 64, 128]
 
-# Note: this is a hack. We should update each model to register the
-# stacked params and get it from there instead in a future PR.
-# fused_name: List[shard_name]
-FUSED_LAYER_NAME_MAPPING = {
-    "qkv_proj": ["q_proj", "k_proj", "v_proj"],
-    "gate_up_proj": ["gate_proj", "up_proj"]
-}
-
 
 # Normalize the group_shape to the full extent for any dims that are -1
 def _normalize_quant_group_shape(x: torch.Tensor, group_shape: Tuple[int,
@@ -178,14 +171,23 @@ def unpack_quantized_values_into_int32(w_q: torch.Tensor,
     return res.permute(inv_perm)
 
 
-def is_layer_skipped(prefix: str, ignored_layers: List[str]) -> bool:
+def is_layer_skipped(
+    prefix: str,
+    ignored_layers: List[str],
+    fused_mapping: Mapping[str, List[str]] = MappingProxyType({})
+) -> bool:
     # prefix: model.layers.0.self_attn.q_proj
     # proj_name: q_proj
     proj_name = prefix.split(".")[-1]
-    if proj_name in FUSED_LAYER_NAME_MAPPING:
+
+    # Fused layers like gate_up_proj or qkv_proj will not be fused
+    # in the safetensors checkpoint. So, we convert the name
+    # from the fused version to unfused + check to make sure that
+    # each shard of the fused layer has the same scheme.
+    if proj_name in fused_mapping:
         shard_prefixes = [
             prefix.replace(proj_name, shard_proj_name)
-            for shard_proj_name in FUSED_LAYER_NAME_MAPPING[proj_name]
+            for shard_proj_name in fused_mapping[proj_name]
         ]
 
         is_skipped = None
diff --git a/vllm/model_executor/model_loader/loader.py b/vllm/model_executor/model_loader/loader.py
index 19e3bc6a259e9..2a2c2523b725d 100644
--- a/vllm/model_executor/model_loader/loader.py
+++ b/vllm/model_executor/model_loader/loader.py
@@ -43,6 +43,7 @@
     TensorizerConfig, is_vllm_tensorized, load_with_tensorizer,
     serialize_vllm_model, tensorizer_weights_iterator)
 from vllm.model_executor.model_loader.utils import (ParamMapping,
+                                                    configure_quant_config,
                                                     get_model_architecture,
                                                     set_default_torch_dtype)
 from vllm.model_executor.model_loader.weight_utils import (
@@ -113,6 +114,9 @@ def _initialize_model(
     model_config = vllm_config.model_config
     model_class, _ = get_model_architecture(model_config)
 
+    if vllm_config.quant_config is not None:
+        configure_quant_config(vllm_config.quant_config, model_class)
+
     signatures = inspect.signature(model_class.__init__)
     all_params = [param.name for param in signatures.parameters.values()]
     if "vllm_config" in all_params and "prefix" in all_params:
diff --git a/vllm/model_executor/model_loader/utils.py b/vllm/model_executor/model_loader/utils.py
index 7a82a695c5070..dc620d4984a77 100644
--- a/vllm/model_executor/model_loader/utils.py
+++ b/vllm/model_executor/model_loader/utils.py
@@ -11,6 +11,8 @@
 
 from vllm.config import ModelConfig, ModelImpl
 from vllm.logger import init_logger
+from vllm.model_executor.layers.quantization.base_config import (
+    QuantizationConfig)
 from vllm.model_executor.models import ModelRegistry
 from vllm.model_executor.models.adapters import (as_classification_model,
                                                  as_embedding_model,
@@ -138,3 +140,23 @@ def get_sub_modules(self,
             if module_name.endswith(key):
                 return key, value
         return None
+
+
+def configure_quant_config(quant_config: QuantizationConfig,
+                           model_class: Type[nn.Module]):
+    """
+    Pass packed_modules_mapping by reference to quant_config so that
+    quant_config can properly match fused modules
+
+    Note that model attributes are passed by reference to quant_config,
+    enabling them to be updated by model_class.__new__ (ex. chatglm, qwen)
+    """
+    packed_mapping = getattr(model_class, "packed_modules_mapping", None)
+    if packed_mapping is not None:
+        # pass packed_modules_mapping by reference to quant_config
+        quant_config.packed_modules_mapping = packed_mapping
+    else:
+        logger.warning(
+            "The model class %s has not defined `packed_modules_mapping`, "
+            "this may lead to incorrect mapping of quantized or ignored "
+            "modules", model_class.__name__)
diff --git a/vllm/model_executor/models/chatglm.py b/vllm/model_executor/models/chatglm.py
index b81a9e917d455..a316486752590 100644
--- a/vllm/model_executor/models/chatglm.py
+++ b/vllm/model_executor/models/chatglm.py
@@ -265,12 +265,14 @@ def __init__(
             self.total_num_kv_heads,
             bias=config.add_bias_linear or config.add_qkv_bias,
             quant_config=quant_config,
+            prefix=f"{prefix}.query_key_value",
         )
         self.dense = RowParallelLinear(
             self.total_num_heads * self.head_dim,
             config.hidden_size,
             bias=config.add_bias_linear,
             quant_config=quant_config,
+            prefix=f"{prefix}.dense",
         )
 
         # https://huggingface.co/THUDM/chatglm3-6b-32k/blob/e210410255278dd9d74463cf396ba559c0ef801c/modeling_chatglm.py#L141
@@ -327,6 +329,7 @@ def __init__(
         self,
         config: ChatGLMConfig,
         quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
     ):
         super().__init__()
 
@@ -338,6 +341,7 @@ def __init__(
             [config.ffn_hidden_size] * 2,
             bias=config.add_bias_linear,
             quant_config=quant_config,
+            prefix=f"{prefix}.dense_h_to_4h",
         )
 
         self.activation_func = SiluAndMul()
@@ -348,6 +352,7 @@ def __init__(
             config.hidden_size,
             bias=config.add_bias_linear,
             quant_config=quant_config,
+            prefix=f"{prefix}.dense_4h_to_h",
         )
 
     def forward(self, hidden_states):
@@ -396,7 +401,7 @@ def __init__(
             config.hidden_size, eps=config.layernorm_epsilon)
 
         # MLP
-        self.mlp = GLMMLP(config, quant_config)
+        self.mlp = GLMMLP(config, quant_config, prefix=f"{prefix}.mlp")
 
     def forward(
         self,
@@ -507,7 +512,8 @@ def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
 
         self.embedding = VocabParallelEmbedding(config.padded_vocab_size,
                                                 config.hidden_size,
-                                                quant_config=quant_config)
+                                                quant_config=quant_config,
+                                                prefix=f"{prefix}.embedding")
 
         self.num_layers = config.num_layers
         self.multi_query_group_num = config.multi_query_group_num
@@ -766,6 +772,7 @@ class ChatGLMForCausalLM(ChatGLMBaseModel, SupportsLoRA, SupportsPP,
                          SupportsMultiModal):
     # Ensure that the LoRA support check passes when the class is not
     # initialized, but set all these attributes to empty.
+    # These will be updated when an instance class is selected
     packed_modules_mapping = {}
     supported_lora_modules = []
     embedding_modules = {}
@@ -777,9 +784,18 @@ def __new__(
         prefix: str = "",
     ) -> None:
         config = vllm_config.model_config.hf_config
+
         # Initialize VL
-        if hasattr(config, "vision_config"):
-            return ChatGLMV(vllm_config=vllm_config, prefix=prefix)
+        if hasattr(config, "vision_config"):  # noqa: SIM108
+            instance_cls = ChatGLMV
         # Initialize LLM
         else:
-            return ChatGLM(vllm_config=vllm_config, prefix=prefix)
\ No newline at end of file
+            instance_cls = ChatGLM
+
+        # quant_config references base class members,
+        # so update values before init is called
+        cls.packed_modules_mapping.update(instance_cls.packed_modules_mapping)
+        cls.supported_lora_modules += instance_cls.supported_lora_modules
+        cls.embedding_modules.update(instance_cls.embedding_modules)
+        cls.embedding_padding_modules += instance_cls.embedding_padding_modules
+        return instance_cls(vllm_config=vllm_config, prefix=prefix)
diff --git a/vllm/model_executor/models/glm4_vision_encoder.py b/vllm/model_executor/models/glm4_vision_encoder.py
index 4449eb8e8b143..2facd1353aef1 100644
--- a/vllm/model_executor/models/glm4_vision_encoder.py
+++ b/vllm/model_executor/models/glm4_vision_encoder.py
@@ -74,11 +74,13 @@ def __init__(
             self.head_dim,
             config.num_heads,
             quant_config=quant_config,
+            prefix=f"{prefix}.query_key_value",
         )
         self.dense = RowParallelLinear(
             config.hidden_size,
             config.hidden_size,
             quant_config=quant_config,
+            prefix=f"{prefix}.dense",
         )
 
         self.attn = MultiHeadAttention(self.num_heads_per_rank, self.head_dim,
@@ -101,6 +103,7 @@ def __init__(
         self,
         config,
         quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = '',
     ):
         super().__init__()
         self.config = config
@@ -109,11 +112,13 @@ def __init__(
             config.hidden_size,
             config.intermediate_size,
             quant_config=quant_config,
+            prefix=f"{prefix}.fc1",
         )
         self.fc2 = RowParallelLinear(
             config.intermediate_size,
             config.hidden_size,
             quant_config=quant_config,
+            prefix=f"{prefix}.fc2",
         )
 
     def forward(self, x: torch.Tensor) -> torch.Tensor:
@@ -137,7 +142,9 @@ def __init__(
         self.attention = Attention(config,
                                    quant_config=quant_config,
                                    prefix=f"{prefix}.attention")
-        self.mlp = MLP(config, quant_config=quant_config)
+        self.mlp = MLP(config,
+                       quant_config=quant_config,
+                       prefix=f"{prefix}.mlp")
         self.post_attention_layernorm = LayerNorm(config.hidden_size,
                                                   eps=config.layer_norm_eps)
 
@@ -164,7 +171,7 @@ def __init__(
         self.layers = nn.ModuleList([
             TransformerLayer(config,
                              quant_config=quant_config,
-                             prefix=f"{prefix}.layer.{layer_idx}")
+                             prefix=f"{prefix}.layers.{layer_idx}")
             for layer_idx in range(config.num_hidden_layers)
         ])
 
@@ -181,6 +188,7 @@ def __init__(
         config,
         in_features,
         quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = '',
     ):
         """
         The original implementation is the same as:
@@ -222,7 +230,8 @@ def __init__(
         self.linear_proj = ReplicatedLinear(in_features,
                                             config.hidden_size,
                                             bias=False,
-                                            quant_config=quant_config)
+                                            quant_config=quant_config,
+                                            prefix=f"{prefix}.linear_proj")
         self.norm1 = nn.LayerNorm(config.hidden_size)
         self.act1 = nn.GELU()
         self.act2 = SiluAndMul()
@@ -230,12 +239,15 @@ def __init__(
         self.merged_proj = MergedColumnParallelLinear(
             config.hidden_size, [config.ffn_hidden_size] * 2,
             bias=False,
-            quant_config=quant_config)
+            quant_config=quant_config,
+            prefix=f"{prefix}.merged_proj")
 
-        self.dense_4h_to_h = RowParallelLinear(config.ffn_hidden_size,
-                                               config.hidden_size,
-                                               bias=False,
-                                               quant_config=quant_config)
+        self.dense_4h_to_h = RowParallelLinear(
+            config.ffn_hidden_size,
+            config.hidden_size,
+            bias=False,
+            quant_config=quant_config,
+            prefix=f"{prefix}.dense_4h_to_h")
 
     def forward(self, x):
         x, _ = self.linear_proj(x)
@@ -262,7 +274,8 @@ def __init__(
                                        prefix=f"{prefix}.transformer")
         self.linear_proj = GLU(config,
                                in_features=config.hidden_size,
-                               quant_config=quant_config)
+                               quant_config=quant_config,
+                               prefix=f"{prefix}.linear_proj")
         self.conv = nn.Conv2d(in_channels=vision_config.hidden_size,
                               out_channels=config.hidden_size,
                               kernel_size=2,
diff --git a/vllm/model_executor/models/minicpmv.py b/vllm/model_executor/models/minicpmv.py
index 3d16d635b578a..20f3a3d1989be 100644
--- a/vllm/model_executor/models/minicpmv.py
+++ b/vllm/model_executor/models/minicpmv.py
@@ -1473,6 +1473,7 @@ class MiniCPMV(MiniCPMVBaseModel, SupportsMultiModal, SupportsLoRA):
     """
     # Ensure that the LoRA support check passes when the class is not
     # initialized, but set all these attributes to empty.
+    # These will be updated when an instance class is selected
     packed_modules_mapping = {}
     supported_lora_modules = []
     embedding_modules = {}
@@ -1489,8 +1490,15 @@ def __new__(cls, *, vllm_config: VllmConfig, prefix: str = ""):
             version = str(config.version).split(".")
             version = tuple([int(x) for x in version])
         # Dispatch class based on version
-        instance_class = _SUPPORT_VERSION.get(version)
-        if instance_class is None:
+        instance_cls = _SUPPORT_VERSION.get(version)
+        if instance_cls is None:
             raise ValueError(
                 "Currently, MiniCPMV only supports versions 2.0, 2.5, and 2.6")
-        return instance_class(vllm_config=vllm_config, prefix=prefix)
+
+        # quant_config references base class members,
+        # so update values before init is called
+        cls.packed_modules_mapping.update(instance_cls.packed_modules_mapping)
+        cls.supported_lora_modules += instance_cls.supported_lora_modules
+        cls.embedding_modules.update(instance_cls.embedding_modules)
+        cls.embedding_padding_modules += instance_cls.embedding_padding_modules
+        return instance_cls(vllm_config=vllm_config, prefix=prefix)
diff --git a/vllm/model_executor/models/qwen.py b/vllm/model_executor/models/qwen.py
index 327fad0f5702d..8970661243148 100644
--- a/vllm/model_executor/models/qwen.py
+++ b/vllm/model_executor/models/qwen.py
@@ -1135,6 +1135,7 @@ class QWenLMHeadModel(QWenBaseModel, SupportsMultiModal, SupportsLoRA):
     """
     # Ensure that the LoRA support check passes when the class is not
     # initialized, but set all these attributes to empty.
+    # These will be updated when an instance class is selected
     packed_modules_mapping = {}
     supported_lora_modules = []
     embedding_modules = {}
@@ -1146,9 +1147,18 @@ def __new__(
         prefix: str = "",
     ) -> QWenBaseModel:
         config = vllm_config.model_config.hf_config
+
         # Initialize VL
-        if hasattr(config, "visual"):
-            return QWenVL(vllm_config=vllm_config, prefix=prefix)
+        if hasattr(config, "visual"):  # noqa: SIM108
+            instance_cls = QWenVL
         # Initialize LLM
         else:
-            return QWenLLM(vllm_config=vllm_config, prefix=prefix)
+            instance_cls = QWenLLM
+
+        # quant_config references base class members,
+        # so update values before init is called
+        cls.packed_modules_mapping.update(instance_cls.packed_modules_mapping)
+        cls.supported_lora_modules += instance_cls.supported_lora_modules
+        cls.embedding_modules.update(instance_cls.embedding_modules)
+        cls.embedding_padding_modules += instance_cls.embedding_padding_modules
+        return instance_cls(vllm_config=vllm_config, prefix=prefix)