What are the differences in vehicle performance between gta v and gta online?

In the single‑player campaign of GTA V, each vehicle type has fixed performance characteristics such as acceleration, top speed, handling, and durability. These stats are set by the game and are the same regardless of platform. In GTA Online, the same vehicles appear with those base stats, but players can purchase upgrades from Los Santos Customs. These upgrades include engine tuning, turbo, nitrous, and improved tires, each of which can modify specific performance attributes. Because players control the amount and type of upgrades, vehicle performance in GTA Online can vary widely from the base model. Additionally, GTA Online introduces new vehicle classes that do not exist in the single‑player game, and some vehicles may have altered stats to balance online gameplay, but the core performance curves remain similar to the single‑player versions. The best way to understand the exact differences is to refer to the in‑game upgrade menus or the official Rockstar documentation, as performance numbers can change with patches.