I have had a few diesel engined cars.
Won’t be buying another one again.
The new engines with all the technology to make them pass the emissions testing is just making the engine way to complicated and expensive when it goes wrong.
Leasing is probably the best option, at least it is covered by the manufacturers warranty, and no long term big bill issues.
Had the EGR valve go on my Skoda diesel after 3 years of use. My driving habits changed, so no big mileage.
I’D just steer clear of any diesel unless driving a lot of miles.
Petrol, quieter, cleaner, nicer to drive these days in my opinion.
I went electric , Nissan Leaf, but it’s not for everyone, but no cam belt, egr, DMF, or any whirring around bits.
Lovely and quiet as well.
Petrol engined car with a cam chain probably best option for most, and would have an auto.