I love diesels, but have to disagree.
- Diesels struggle to be as clean with EGR and Adblue being required to keep smog emissions down.
- Diesels tend to get very low numbers from the EPA, but hybrids can also beat the estimates especially at lower speeds if you stay a lot in electric mode. Diesel will always give more kWh per liter due to higher power density, but a big part of the fuel is used to simply keep the engine spinning.
- Reliability of the older diesels were quite insane, but there is an awful lot on newer diesels put there to improve emissions, economy, power and smoothness that can go wrong. I have zero numbers so they could still be bulletproof, but I keep hearing of things that break like EGR, turbos and just recently I learned about the dual mass flywheel which sometimes explodes...
- Torque wise it really depends. Diesels have a lot of torque, but that is when the turbo is spooled up. The new low displacement turbo diesels have zero power below ~1200RPM which I notice a lot where I drive because it is quite steep most places. The Honda CRZ being the only hybrid with a manual has max torque at 1000RPM. It's far from the big push in a diesel, but at least I can count on it
In rural roads diesels get much better needing less downshifting than petrol cars.
- Again in shorter, slower trips hybrids excel. The Prius even stores hot coolant for up to three days. Living in the arctic I wish all cars did that especially diesels that need a million years to heat up.
- I don't have an opinion, but you should live here. Diesel here is 9$ a gallon. A real bargain when petrol is almost 10
The vast majority of cars I drive are diesels and I really like most of them and how reliable our 380,000km work horse is. One of the biggest surprises was an old beat up Toyota with 415,000km and a Diesel so old it lacked a turbo charger. It was icy so I didn't need the extra power and despite shaking a bit at idle (possibly too low) the engine was really sweet and reved nicely. The big surprise was how much better it was than the much newer diesel I usually drove.
The Golf Bluemotion also seemingly refuses to burn fuel and is able to get just over 3l/100km (high 70s MPG) while keeping a consant speed which blew my mind when I first noticed it. A 50% reduction in fuel consumption is hard to ignore.