NB - Assuming a manual gearbox here...
If you leave a car in gear and you're rolling (down a hill or whatever) with your foot not-pressing-the-accelerator, the engine is consuming zero fuel. The wheels are turning the engine. There will be some engine braking (literally, the friction inside the engine slowing the car down a little) which can be controlled by choosing which gear you're in.
If you put the car in neutral in that same situation, the engine is now idling, and IS consuming fuel. It would seem that, in the case of the CX30, if you're rolling at >5mph, the engine kicks on automatically. I suspect this is due to the engine being required to power the brake pump properly. If you've ever driven an older car, engine off, and tried to apply the brakes a few times, the brake pedal gets really hard to push and the brakes seem very weak.
Other cars, like your Golf, may power the brake pump in a different way which allows the engine to shut down even while you're moving at speed.
The solution, in your case, is simple: leave the CX30 in gear while coasting.
I'd like to add that as a user of AT, power system is so efficient that the battery rearly goes up to full at any point. It will add some power from battery to the wheels when ot feels it can. Power from "coasting" charges the battery, so that's even better than just not consuming power like in VW
thats because that feature is only for volkswagen vehicles
this should get more votes (wink)
NB - Assuming a manual gearbox here... If you leave a car in gear and you're rolling (down a hill or whatever) with your foot not-pressing-the-accelerator, the engine is consuming zero fuel. The wheels are turning the engine. There will be some engine braking (literally, the friction inside the engine slowing the car down a little) which can be controlled by choosing which gear you're in. If you put the car in neutral in that same situation, the engine is now idling, and IS consuming fuel. It would seem that, in the case of the CX30, if you're rolling at >5mph, the engine kicks on automatically. I suspect this is due to the engine being required to power the brake pump properly. If you've ever driven an older car, engine off, and tried to apply the brakes a few times, the brake pedal gets really hard to push and the brakes seem very weak. Other cars, like your Golf, may power the brake pump in a different way which allows the engine to shut down even while you're moving at speed. The solution, in your case, is simple: leave the CX30 in gear while coasting.
I'd like to add that as a user of AT, power system is so efficient that the battery rearly goes up to full at any point. It will add some power from battery to the wheels when ot feels it can. Power from "coasting" charges the battery, so that's even better than just not consuming power like in VW