Sounds a bit unexpected and weird to compare Audi RS3 and Audi R8 V8 Coupe. RS3 is based on A3 and it is relatively cheaper and smaller than the R8, which is a proper sports car! RS3 and R8 are totally different cars. Interestingly, the performance figures do not say the same thing! Actually, they sounds more interesting.
The new RS3 is powered by 2.5 TFSi engine with 340 HP and R8 4.2 FSi engine with 430 HP. There is only 90 HP is missing between these two cars, and this is not a good result for R8. £40 000 priced Audi RS3 accelerates to 100 kph in 4,6 seconds and £90 000 priced R8 V8 Coupe accelerates to 100 kph in 4,6 seconds.
Unfortunately, twice the price does not bring twice the performance! If you own a R8 and one day overtaken by a RS3, don’t be surprised.