Fastest car in GTA 5 story mode?

careful with 'fastest car' lists online, most are about gta online and half those cars aren't buyable in story mode. if a list names something you can't find on legendary motorsport on the phone, that's why. and whatever you pick, do the engine and turbo upgrades. stock vs fully upgraded is a much bigger gap than between most of the top cars.

depends if you mean top speed or getting round a track. in a straight line the Adder is the old answer and it still holds up once it's fully upgraded at LS Customs. around corners the Zentorno and Entity XF feel quicker even if the speedo says otherwise. don't trust the stat bars on the website, they're pretty rough.