Have took my car back to the dealers today for some warranty work. first of all was drivin up the m5 towing and over taking a lorry when the spanner light came on and lost power. They say they have replaced the pressure boost valve ?? anyway the one that puzzled me was the suspension creaked when going over speed bumps, they reckoned that both the anti roll bars were nackered. Now ive only had car since feb, done bout 1500 miles in it and its only done 21,000 from new. Is this a common thing ?? has anyone had the same probs ? ?