@JeffRay, we live in parallel universes; I just returned my B250e lease too. After 6 mostly great years and 65K miles with two B class electrics, it was hard to give up this mostly awesome car. The residual value price for mine was a tempting deal, but, like you, I'm not driving much any more. The B250e price was too close to a new car price for cars with more than double the range and a new car warranty (Bolt, Leaf, Kona) and a slew of upcoming EVs (EQC, ID.4, XC40-Recharge, Tesla?). The B250e is a more premium car than the Bolt or Leaf, but the Kona is almost as good. I'll hold out for a while on a new car and see.
Unfortunately, like too many others here, I had to have the drive unit replaced at 20K miles on the 2017. It was replaced with a refurbished Tesla motor that was working well, but Mercedes doesn't warranty it for more than the regular 4yr/50K miles. The older RAV4-EV and the early Tesla S's all suffered the same drive unit issues with reports from those more widely sold cars at something like 50-60% failure rate. With a repair cost of $9-15K, that's a bit risky except with an amazing price. Of course, this car marked MB's first foray into electric. It was one of the rarest production cars in its history too. You never know, it might become a collectible antique in the future and a quaint reminder of human-driven cars that could still work on electricity and didn't need that long-gone fuel called gasoline.
Also I hated that Hall and Oates song.
2012 Nissan Leaf, 2014 Mercedes B-electric, 2017 Mercedes B250e