Just for relevance, the law is 30 days from purchase to have any problems corrected by a dealer or you're entitled to a refund.
Me and my partner, Rachel, have just had to invoke our rights against a dealer who sold us a car. Me and Rachel collected a mk5 04 Golf (with 3 months warranty) and on the drive home noticed some odd noises at idle. Turns out it's the flywheel.
Took it to our local garage who confirmed it, and priced up a conversion to a single-mass flywheel kit (clutch, flywheel, labour + VAT = £715). For the sake of the story, we'll call the dealer Ian. Ian said that we must take the car to his choice of mechanic, pay for repairs ourselves and then 'get creative' with the warranty paper-work and he'd pay us back the difference. We held off, at least until we'd sought some advice.
We called the warranty company, who said that as the flywheel failure occurred within 28 days of purchase then they wouldn't pay because "it's the dealer's responsibility to pay for repairs, not the warranty company, within the first 28 days". Plus, as the problem happened so soon after buying the car then it must have been a pre-existing problem and they wouldn't pay out anyway. So, we saved ourselves the money that we wouldn't have seen again, had we taken Ian's advice.
Talked it through with Ian, had to get very firm and eventually very 'shouty', before we arranged for the car to be trailered back to his garage and for the work to start on Monday, all at Ian's cost.
The car was, until yesterday, at our local garage before being trailered back to Ian's mechanic. Luckily, the mechanic has his trailer all liveried-up so we found the name of the garage he was using (Ian wouldn't tell us which garage he used) and called the mechanic today. Ian had told him that the clutch had gone, and the mechanic was about o order a new clutch kit and not a flywheel kit. Anyway, we've agreed with Ian's mechanic to let us know about things without letting Ian know that we know! All very hush-hush.
So, the car may be back with us mid-week - might not though.
Chuffing car dealers and salesmen. I can honestly say that I've never met an honest one. Even my mates who have worked in the trade previously have imparted shocking horror stories.