DPFs do need a goid clean out once in a while. If you don’t do it, tgen become permanently blocked and will need replacing at large expence.
really, diesels should only be used if you do over 15,000 miles a year, a mix of town and motorway driving.
Under that a hybrid petrol or petrol car is the better bet, though there will be a version of the DPF (Diesel Particulate Filter) for petrol cars at I think eu6D emissions, a PPF if you will.
if you are doing very small city drives only, then buy an electric car if yiu can charge on your drive, or a petrol hybrid