My 2006 Mitsubishi Grandis 2.0 diesel (Volkswagen engine) starts fine in the mornings and when cold. However, when I drive a few miles then stop, wait a few minutes and then try to start again the engine runs for about 0.5 seconds and then stops. If I step on the accelerator it revs up but still dies. This happens for the subsequent 3 - 10 attempts and then it starts fine. The number of attempts can sometimes be reduced by locking/unlocking the car with the remote key. My mechanic had a look, but can't find anything. New battery. No engine error codes/lights. I thought that the immobiliser might be kicking in, but my Mitsubishi dealer says that the engine wouldn't start at all then.