Electronic errors in Renault cars?

There are loads of errors with these cars.
However one main problem is the coil packs go faulty on them "Possible cause of rocking motion", I believe Renault do a modified coil now for about £40 + vat
It is advisable to fit all 4, but if moneys tight just fit the 1 or 2 causing the problem.

Dave.
October 2008