When fully charged, the Bentayga defaults to the Hybrid drive mode, which primarily uses the battery for power. Under light throttle application, the Bentayga can travel at speeds up to 84 mph on electricity alone. Exceed that speed, or apply a more liberal use of the accelerator pedal, and the turbocharged V6 fires up for extra thrust. This mode also pairs with the navigation system. Input a destination, and the Bentayga will use advanced prediction software and attempt to fully use the battery by the time you reach your destination. This way, the Bentayga drives on EV power as much as possible to save gasoline.
There's an EV drive mode in addition to the Hybrid mode. It uses the battery as much as possible and requires you to dig into the pedal more than in Hybrid mode before the engine switches on. Conversely, Hold mode uses the V6 engine only and saves the battery charge for later.
Though the Bentayga's numerous powertrain modes could be confusing, driving this ultra-luxury SUV isn't. It pulls away from a stop smoothly under EV power, and you don't feel any driveline shock once the engine turns on. There's the low growl of the V6 and extra thrust once you put your foot down, but those are the only indications that you've switched from electric to engine driving.
For drivers trying to maximize their EV efficiency, the Bentayga gives you three ways to track the electricity-to-gas switchover. The first is the left dial in the instrument panel — the needle sweeps from the "EV Drive" section to a traditional tachometer section as you apply throttle and the engine kicks on. The second is in the navigation system. A green circle surrounds the Bentayga's current position so you can see how far you can travel on EV power given the current charge of the battery. The third is through the gas pedal, which vibrates as you approach the switchover point. We found this feedback odd and disconcerting. Thankfully, it can be disabled via a setting in the infotainment system.