I got my shiny new 407 HDi 136 last Tuesday and very nice it is too! I was a bit surprised to find though that the trip computer was recording a fuel consunption of 34mpg. This is a lot worse than I was led to expect from the published figures. In fact it is about the same as my 2.4 litre normally aspirated indirect injection diesel powered motor caravan!
Having now learned to use the 6 speed gearbox a bit better it is now up to
36mpg, still a lot lower than the 49mpg combined cycle figure despite doing most of my driving on motorways and trunk roads.Can anybody suggest a reason for this? Possible ones I could guess at are:
The car is new, and will improve when it has dome a few more than its current
250 miles (although I was told that the engine had been "bench run" to avoid the need for running in).or
The trip computer is inaccurate. It would be better to wait until I have used a tank of fuel, than perform my own calcultaion based on anount of fuel to fill the tank and miles covered.
What MPG do others get with this car?
Martin