If Arnold Schwarzenegger became a vegetarian, the latest Ford F-150 EcoBoost would be the car he’d drive. The big, badass truck is gaining fuel-saving Start-Stop system in its new modelyear in an effort to make the vehicle a little bit greener.

The Start-Stop system fitted to Ford F-150 EcoBosst model is specially tuned for trucking. It shuts off the engine when the vehicle is at a stop just like a normal system, but it known when you are except towing something or when you are in four-wheel-drive mode, and it disengages automatically. Ford doesn’t mention any numbers, but promises this saves fuel and reduces CO2 emissions.

The system is offered on the 2016 Ford F150 with 2.7-liter EcoBoost engine, and will also be available for all 3.5-liter EcoBoost-engined models, including the 2017 F-150 Raptor.

“EcoBoost already powers F-150’s best-in-class towing,” said Doug Scott, Ford truck group marketing manager. “Now, with every EcoBoost-equipped F-150 mildly electrified with standard Auto Start-Stop technology, customers’ fuel efficiency is expected to improve as well.”