@andreew
Roblox Oct 29, 2026

Tips for building vehicle models in Roblox Studio?

I'm modelling buses and trains for a city game I'm making. They look ok but the part count is huge and the game lags once a few are spawned. How do you keep vehicle models detailed without killing performance?
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charlie_hq Nov 04, 2026
andreew
Build the body out of parts and wedges first and only union things at the very end, if at all. Unions are a pain to edit later and they tank performance if you go mad with them. Keep the car in one model group, weld everything to a single base part, and keep the wheels as separate cylinders. If you want it drivable rather than decorative, drop it onto one of the free chassis kits in the toolbox rather than writing your own, A-Chassis has been the default for years. And model it slightly bigger than real life proportions, Roblox characters are chunky and realistic sized cars look tiny next to them.