i have a 13y old 300TE which has been fantastically reliable until now. After running for approx 10 mins the car stalls with loss of power- this only happens if driving at low speeds or pulling away from lights etc. This only applies to first run of the day. All diagnostics checks ok at garage and car usually restarts if you wait a few minutes although may be a little juddery at first then runs perfectly. Only other problem is slow leak on coolent which has got v low at times