For an annual cost of $1,200 (£991) excluding tax, the company will enable some of its vehicles to accelerate from 0-60mph a second faster.All told, it estimates this amounts to a 20-24% increase in output, allowing a Mercedes-EQ 350 SUV to accelerate from 0-60mph in about 5.2 seconds, as opposed to 6.2 seconds without the subscription."Trying to leverage even more profit out of subscription services is a worrying trend and I hope there is a consumer backlash against it."And in December 2021, Toyota announced it would charge some drivers $8 per month to remotely start their cars using a key fob.The Acceleration Increase subscription is listed as "coming soon" on the US Mercedes storefront, with no exact date given for its release."