It does warm up properly as it will mainly run on ICE until the car decides that it's warmed up even though you have pressed the EV button. I can only vouch for Range Rover here, but imagine all PHEV's are the same
As an example on my travels yesterday, even though I pressed EV at the start, the first part of my journey was 4.4 miles & EV distance was 1.9 miles. The last part of the journey was 4.5 miles & EV distance was 4.1 miles
Regarding the brakes, they work as a normal ICE car even in EV, unlike full EV vehicle, where the electric motor works like a brake when powering down
I plug it in usually when its down to around 8 miles range as my granny charger is on low cost between midnight & 5.0 am. It will fully charge in that time period. If I let it go lower, it probably charged to around 80% in that time. As I usually let the car decide when to use EV its only plugged in around twice a week. That is why I said 50 mile range would be my sweet spot as it would only be charging once a week.
Unlike the S63 that cannot pass a filling station without wanting to visit, The Range Rover can go for weeks without a visit
That's interesting. I believe that both the Mercedes and BMW hybrid systems allow the car to be driven in electric mode until a high speed is reached, or battery drain becomes significant.
Again with both Mercedes and BMW hybrids, slowing down is achieved by recycling energy into the battery, which means less use of the brakes. it can be varied, according to taste, but "good hybrid driving style" means less braking via brake pads and more braking via the electric motor.
It's great that you plug your hybrid every time you get back from a trip. That's certainly not what happens to most of the EV's who live round my way. And that's why the Government removed the hybrid company car tax break once they realised that most company car drivers weren't actually charging every night.
Doesn't the S63 have a 350 mile petrol tank range? If you're filling it every time you pass a filling station, you must be living somewhere very rural.
Autocar reckoned that the Range Rover's 70 litre petrol tank gave it a 430 mile real world range. As you say, if you're plugging it in once a week, that must give you an extra 40 miles a week to play with. Call it a visit to the petrol station once a month, after 590 miles, which is fine if you're only doing 7,000 miles a year. With an EV, you'd easily be able to charge the EV once a week and never visit a petrol station, or even a commercial charger away from home.
Autocar got 27mpg from the Range Rover over its 15,000 mile use, 25 pence / mile which is very impressive from a 3 litre engine. (Excluding the electricity cost, of course) But is it really that efficient?