It sounds like it. The MPG will drop for a short while as the engine dumps extra diesel into the exhaust to burn off the soot etc. to clean the particulate filter. This is normal for a car fitted with a DPF. Don't get too hung up about it and let it spoil your enjoyment of your car. It may seem frightening at first, but I have posted calculations on here in the past and the extra cost to you in reality is pence rather than pounds to do the PDF clean every few hundred miles.
I know it is difficult, but if you turn the computer to another setting than MPG, you will enjoy the car much more.
I know it is difficult, but if you turn the computer to another setting than MPG, you will enjoy the car much more.
