The range estimates my 2014 Tesla provides are, at best, very generous. It is frequently generous to the tune of 50 miles on a 200 mile range. Sometimes it's dead on.
Yes, I might not always be driving the most efficiently, but even when I set the cruise and drive on a flat, constant speed I can see swings of 40 miles. I'm generally a conservative, relaxed driver and rarely exceed the speed limit, happily just cruising along in the slow lane on the right.
I no longer trust Tesla to accurately measure mileage and assume the I'll get 70-80% of the car says I will.
My 2019 Model 3 is pretty good at estimating the range remaining, but it drops significantly overnight to the tune of 40-50 MPH in the dead of winter. That's not as big of a problem for me since I have a home charger, but it's definitely led to a few close calls getting home from work.
Have you considered asking your employer to install EV charging stations for employee use? There are metered solutions if they’re not comfortable providing the power for free.
A client installed ChargePoint chargers for myself (Model S) and their full time employees with EVs (Plug in Prius, Bolts, various Teslas) when I provided them with incentive information and helped them through the process gratis (EVs and electrical infra are my jam).
My employer refused to remove a wasp nest that had formed in the NOC room. I was told that $10/month for offsite backup was too expensive. There's no way they'd install a multi-thousand-dollar charger for one employee's car.
Yes, I might not always be driving the most efficiently, but even when I set the cruise and drive on a flat, constant speed I can see swings of 40 miles. I'm generally a conservative, relaxed driver and rarely exceed the speed limit, happily just cruising along in the slow lane on the right.
I no longer trust Tesla to accurately measure mileage and assume the I'll get 70-80% of the car says I will.