I've order a Porsche Macan and need to spec it soon. All reviews seem to go with the diesel version. However, I will only cover about 8000 miles a year and am drawn to the 2.0 petrol version which costs about £2000 less. I plan to keep it for a couple of years and residuals for current two-year old cars suggest a £2000 difference in petrol/diesel values. There's nothing to choose between the performance figures but of course the diesel is more economical to run. What do you think?