Today I drove my wife's 10 year old M35X and felt a bit faster... I think the new battery does improve car performance a bit... Not sure why but it does!!!
I think M's throttle response is almost as good as my son's 2007 G35S now if NOT better. I think that's because M's condition was much better than G's when I bought them 8 and 10 years ago...
So if you have the money you should buy new ones instead of used ones. But, buying used ones with less than 50K kms is also good and much cheaper. Plus, you can change cars more often...
(because these cars can last so long and it's very difficult and long to change them...)Now talk about my new GSF... I think my GSF throttle response gets a little better now since it gets more mileage. But, if I want GSF throttle response to be like my wife's M, I think I have to drive my GSF for additional 50K kms... Plus, a dose of XADO!!!
So that's another reason to buy used ones because these cars are NOT very fast in the beginning. They all need much more mileage to become really FAST...
