Engine simmered after a long run to lubricate the hot turbo?

Pretty much a non issue with diesels because they pump cold air through the engine on overrun so you'd need some fairly unlikely circumstances to coke the oil in the bearings.

Misfuelled and drained?

Fair point, but most pumps survive a mishap unless driven to destruction without being drained.

Remapped?

Fair point.

DPF going to last?

The hysteria over DPF is getting silly. Only mimsers have this problem and the problem goes away once yoiu start driving them properly.

Clutch and DMF treated sympathetically?

Same applies to petrol engines.

It's not as is modern petrols aren't without their pitfalls. What are the main and big end bearings going to be looking like after the stop-start feature has done its magic 10,000 times?

Vanos durability?

ageing O2 sensor and catalytic converter efficiency.

Electronic throttle body-expensive replacement

Direct injection durability? bore washing and scored cylinder walls. Coked up inlet manifold.

A turbo diesel outperforms a standard petrol of the same displacement by such a margin it's not even funny. A whistles and bells petrol engine is far more complicated than its diesel equivalent.

To be frank these days the whole debate is ill-founded.

If you do more than 14k and are going for a used car its a none issue and brainless to go for a petrol over a diesel.

Most people forget that you'll likely have issues with the direct injection engines on modern petrols as they're not as proven yet, they have turbos that will go wrong just as much as a diesel variant. They have DMFs too and other things will go wrong too.

I myself had a 1.4TSi Golf that had 3 camchains in 10,000 miles (I was unlucky I know), but the diesel Golf I have now has a cambelt..., also it only did 36mpg combined

>>>won't I be able to get some sort of good will from Volkswagen since they did a recall on the injectors and the car has a FVWSH?

Most likely yes if they haven't been replaced already. Sometimes on goodwill payments they don't offer to pay 100% of the cost but unlikely in the case of the injectors.

>>>the chances of a remap is unlikely

You're right quite unlikely.

>>> Anyone recommend buying warranty from the garage I'll be purchasing from?

Doubt you'll find many people here recommending used car warranties. General advice is to put aside the money you would pay to the warranty company to pay for any repair as the warranty companies use every trick in the book not tp pay up. 2 recent posts on this site with bad experiences (BMWs but same principle) and one company was the market leader.

>>>I absolutely hate garages and most people who deal with cars so I'm a little skeptical about trusting them to follow through with any repairs that'll need doing

Wise attitude to have. Find a good local VW independent with lost of recommendations on the VW forums and have them look after your car.