This is a paid asset, but now you can download 3D Low Poly Cars Free.
Detail this asset from Unity Store: Original Link
3D Low Poly Cars v1.0.0
Low Poly Cars are game ready models.Ready to import in to game engine like Unity. This file contains 12 Vehicel fbx model,15 prefabs and texture.
LOW POLY CARS : is solution for racing game and entertaining projects in unity.
This package can be used for games in severals platforms like mobile desktop,
Virtual Reality and Augmented Reality.
COLLECTION INCLUDED:
-12 Vehicle Models
-15 FBX
-15 Prefabs
-1 Texture
-1 Scene
FEATURES INCLUDED:
-All models have Albedo.
-All models are optimized and can be used on Mobile and Desktop platforms.
-All models have a low polygons count, average ranging from 200 polygons to 500 polygons
-Easy to implement in the different projects
Number of textures:1
Texture dimensions:256
Polygon count of [Model Name]:Below 500
Minimum polygon count: 200
Maximum polygon count:500
Number of meshes/prefabs:15
Rigging: No
Animation count
Animation type list
UV mapping: No
LOD information (count, number of levels)
Types of materials and texture maps (e.g., PBR):Low Poly