Mercedes-Benz has new finalized pricing on its vexing “Acceleration Increase” subscription revealed last year that can eke out more electric performance — without any physical modification — from the automaker’s current EQE and EQS EV models, Car and Driver reports.

The updated Acceleration Increase pricing starts at $60 per month, or you can save about $120 and pay $600 per year instead. That pricing only applies to the AWD EQE 350 sedan and its SUV counterpart. Meanwhile, the pricier AWD EQS 450 car and SUV command a higher $90 per month (or $900 per year) rate for their own boost.

Mercedes-Benz had initially set the subscription at $1,200 per year, but now it’s been reduced a bit to a slightly-less-unreasonable rate. The automaker is also letting you pay a one-time fee of $1,950 on the EQE and $2,950 on the EQS to unlock the Acceleration Increase permanently.

The unlock increases acceleration and power output to the motors by 20 to 24 percent, according to Mercedes-Benz. T