Currently driving a thirsty petrol motor, I do mainly short trips around town but at least once every five weeks I do a nonstop 170 kms journey down the country and back, most of it along motorways. That's 340 kms in one day in a round trip, I mention this because I've seen in other threads that the DPF doesn't like all short trips. Would diesel be right for me?
the "long trip" amounts to c4k kms per year, so you would need to be doing another 15-18k per year to warrant a diesel imo.
Also, diesels are not suited to mainly town driving, especially newer ones.