I have just rejected my 172 about a week ago for this annoying knocking noise on front drivers side,asked for eplace,ment car or refund as car is no longer on finance. i have 10,000 miles on clock and have owned the car for 7 months it has been in the garage more than 7 times, i thought enought was enough, i have now got to take it to the dealer on Saturday as a bloke from Renault uk is coming out to drive the car and he is going to make a decision then and there. I will let u know what happens.