My current diesel aside I have usually gotten around the mid 50’s mpg from my previous diesel cars and as far as servicing goes diesel on general is the cheaper service option, oil and filter, no plugs/coil packs, no HT circuit to deal with at all, no issues keeping the CO2 emissions down either, no MAS sensors etc to worry about, the main cost is if the DPF has issues but having said all that we who use the scheme don’t have to worry about servicing costs so no reason to factor that in in this instance for the running costs comparison.
MY next car(can order in October) will have to be another diesel as there just isn’t a viable petrol/hyb rid/bev on the scheme(or at all tbh) at the moment.
My mileage is around 36k right now and I am getting awful mpg from this car, equivalent to a petrol so I know what the difference would be if I chose a petrol over the Pug diesel I’m hoping to get next(either on the scheme or buying 2nd hand) and the money saved over 3 years will pay either the AP or cover the depreciation.