Hi Folks, Hoping someone can shed some light on this: I bought my father-in-law's C270CDI and absolutely loved it, but after a day of driving, I found an issue with the gearbox and I'm now giving the car back. Issue: I drove the car home from the father-in-law's (about 80 mile journey). The car nearly ran out of diesel (it was showing 0 miles range for about the last 20 miles) - I didn't do this deliberately, it was down to the car's fuel guage/reserve tank being a lot less than my old car and also the fact that there were no garages on the journey home. Anyways, I got the car home, put diesel in etc and everything was fine. Next day, I took the car down to show my parents etc., but the car didn't seem to be dropping gear when I put the foot down. There was a little acceleration, but no kick down. When I used the tiptronic and manually shifted down a gear or 2, it did shift down, but there was no additional acceleration over what there was in top gear. After driving like this for a while, I pulled in and stopped for a minute (didn't shut engine off). When taking off, the car seemed to be driving fine again. However, a few minutes later, the issue of little poke was back. I stopped, turned the engine off for a few mins and then started her again. She seemed to be working fine again. Then a different issue reared it's head - when accelerating hard to join the motorway, the car disengaged gear (while in drive) and was just revving when I pressed the accelerator, but no acceleration in the car. I had to knock it into neutral and then back into drive, for it to engage the gear again. The same thing happened after leaving a roundabout (again under hard acceleration). Anyone encountered a similar issue or have any idea what this is? Is the gearbox knackered? It's a real shame as I absolutely love the car and would love to keep it if it happened to be an easy fix, but I somehow doubt it. Thanks in advance.