Well, after spending £80 on wheel alignment after an MOT (car sailed through it!) , I have noticed a slight difference. Mind you it's probably me wishing to see a return for my money, but the car seems even smoother to drive and especially accelerating. Not that there was much wrong anyway, but possible a very slight pull when accelerating from a standstill. I don't see that a rear wheel alignment out by something like 2.9mm is going to be all that noticeable - the fronts were both within the green acceptable tolerance, maybe a degree at most on one of them. But there you go - I need to see an improvement and keep tellingysf everything is just that bit more smoother!