The warning lights have just lit up on my November 2012 car with only 36,000 miles. I have booked it in to the local dealer but I need the car for an urgent trip shortly so I'm concerned that the repair will be (a) expensive and (b) time consuming.
I have a cheap OBDII device that sends data to an iPhone app so I plugged it in and it duly confirmed a glow plug problem - rather more than the garage was able to say. By cancelling the diagnostics error message I can get the cruise control and skid control back on line. The lights only come on for a cold start: a restart is fine.
When it was new the fuel consumption without trying too hard was usually in the high forties . I'm now getting around forty to the gallon: if I drive really carefully I can get 43mpg, so something has changed. I did find that putting a horse box on not only crashed the fuel consumption into the mid twenties, lower than the Nissan Terrano 3.0 we used to have, but that after unhitching the trailer fuel consumption stayed poor for quite a long time.