I'm a Tesla fan but the 7 series still wins in "recharge" time.
Are you counting the sum of all of the time you spend waiting for the car to recharge/refill? If so, and if you're a typical driver, then the Tesla wins. In an average month, you might spend a total of 15 minutes gassing up your car, and zero minutes charging your Tesla (because it's charging while you sleep).
On road trips, it will depend on how well charging stops coincide with bathroom/meal/coffee stops. A supercharger stop is both longer and more frequent than a gas stop, no dispute there, but if you time it to coincide with a break that outlasts the charging stop (easy to do) then the time penalty is zero. It's not practical to overlap gas filling with other stuff, so you can even lose out there.
Now, if you're the sort who drives five hours at a time without stopping then the gas car can win big on charging time. But even if you do that, unless you take those trips pretty frequently, the Tesla can still win on total time spent filling up.
Exterior 120V outlets are pretty common, so another option would be to plug into one of those while at work. That makes for slow charging, but you could add another 40 miles or so of range while you're there. (Understanding this is a hypothetical for you at this point.)
But it is the _only_ advantage left (see disclaimer at the end).
- Reliability should be much higher with Tesla, as the engine is much simpler.
- Ride quality. The 7 is a boat, does not have the agility of smaller, sportier BMW models.
- Looks. Obviously subjective, but 7's styling is very conservative and has not changed much.
Disclaimer: These two cars are targeted at two quite different (though equally affluent) types of buyers. Some people prefer conservative, some sporty.
If you're having any sort of engine failure in an internal combustion car built this century, someone is being malicious and trying to break your car.
Tesla, on the other hand, has had to recall a percentage of their electric motors because they were ripping themselves apart after 10K miles.
All the other parts of the car - the parts that actually still fail on modern vehicles - suspension, electronics, climate control, brakes, drive train, etc. are more complicated in a Tesla than in a regular car. The tesla has an electronically adjustable suspension, remotely upgradable electronics, climate control that doesn't get to run off of excess engine heat and belt driven compressors, two drivetrains (two transmissions and differentials), and regenerative braking. These systems are more complex than normal and only time will tell if they're more reliable than their legacy auto industry equivalents, but my feeling is they won't be.
That's why Lexus (reliability + interiors) is the bees knees. :-)
Repair rates are hovering at 90 repairs per 100 cars for all Model Ss, 2013 - today. 2014's is, ironically, 102 repairs per 100 cars. Compare that to repair rates of 30/100 being average (Minis) for new cars and 1-3/100 being good (Toyotas and their ilk).
Sure a 1980s Merc Diesel might make 500K and the ICE itself might last that long but the surrounding components are not cheap to maintain ....