The one with the bonnet up happened at 4300 miles while driving home from work my good friend in his new cooper s appeared in my rear view mirror
Following some "spirited" driving i was changed from third to fourth and accelerated, the car then lurched badly (Very scary at that speed!) and lost all power
When we stopped and opened the bonnet nothing seemed wrong but the car wouldn't start, it would turn over and almost fire but wouldn't start. The AA man thought it was ECU failure so he caarted it off to my dealership
I got a phone call the next day telling my the head had gone, four exhaust valves were bent and I needed a new cylinder head
Unlucky about the bent valves etc... Did a K series head the other day as the timing belt had broken, it destroyed all the valves!
I had a ZR 160, it was a great car. Decided to go for some more power this time so bought a ZS 180. Very different cars! Loads more torque lower down with the V6, unlike the k series where you have to rev it to make it go.
Only done 800 miles, so not run in yet, but will be changing the oil at 1000 miles( don't like these long service intervals)
Also fitted an X Power exhaust, which now gives it a nice burble.
The X Power exhaust is an official MG Rover accessory, so it does not invalidate your warranty.
Modifying your car will invalidate your warranty, but it would depend what dealer you went to, as some will turn a blind eye. Things like induction kits shouldn't give you a problem, and the exhaust is only under warranty for a year anyway.
The brakes you might have to watch though. Fitting improved pads and discs should be ok, but if you get a braking problem, don't expect it to be done under warranty as most dealers will argue the point that you have moddified the braking system, hence invalidating the warranty.
My local Mg dealer (Motherwell) said they wouldnt touch the brakes under warranty anyway. My rear brakes are binding alot and they said its got nothing to do with them. I'd have to pay to have them looked at.. I reported this fault at 7000 miles and they said they told me it's to be expected on a car of that age (!!???!! age?? its brand new)