* Testing inconsistencies: Different testing methods and conditions (track surface, weather, driver skill) can significantly affect results. Manufacturers' claims aren't always independently verified under standardized conditions.
* Technological advancements: New cars are constantly being developed, and records are frequently broken.
* Definition of "car": The category can include hypercars, electric vehicles, and even modified vehicles, making comparisons complex.
That said, several contenders consistently appear at the top of lists for their incredibly fast 0-60 mph times, often in the range of 1.8 to 2.1 seconds. These typically include cars like the Tesla Model S Plaid, Rimac Nevera, and various hypercars from manufacturers like Lotus, Koenigsegg, and others. The exact "fastest" varies depending on the source and specific testing conditions.
To find the most up-to-date information, I recommend searching for recent articles from reputable automotive publications (like MotorTrend, Car and Driver, etc.) that specialize in performance testing. These articles usually detail the testing methodology, making the results more reliable.