An interesting spotting comes to us from Reddit: the California Air Resources Board has certified a 2016 Tesla Model S 75D as qualifying for Clean Air Vehicle carpool lane access. That's all fine and good, except that there is no Model S 75D — Tesla only offers 70kWh and 90kWh battery pack options for the Model S.

Might there be a 75kWh option coming for the Tesla Model S?

This leads to two possible options:

  1. Somebody updating the CARB website fat-fingered when setting up the Model S and Model X in their database. The Model X is offered with 75kWh and 90kWh batteries.
  2. The Model S 75D option was a premature listing, and one will be coming eventually.

Honestly, either option seems possible, but a Model S 75D seems fairly likely. When Tesla opened public orders for the Model X, the only options for batteries were 75kWh and 90kWh. Tesla may just be working through their current stock of 70kWh batteries for the Model S before dipping into the 75kWh inventory.

The Model S was refreshed just a few weeks ago with a revised front end and updated interior, but the rumored 100kWh battery pack failed to materialize. The Model S and Model X share the same drivetrain and battery architecture — the X is essentially a taller S — so it stands to reason that the 75kWh option will eventually make it to the sedan.

The addition of 5kWh to the base Model S battery pack would add roughly 15 miles to the car's range for a total of 255 miles. We just hope it wouldn't result in an increase over the base $71,5000 price for the Model S 70.