See also:

Increasing fuel economy
● Accelerate slowly and smoothly. Maintain cruising speeds with a constant accelerator position. ● Drive at moderate speeds on the highway. Driving at high speed lowers fuel economy. ...

Battery
● Keep the battery surface clean and dry. Clean the battery with a solution of baking soda and water. ● Make certain the terminal connections are clean and securely tightened. ● ...

Boxy Dynamics
I have no reason to believe the Cube is unstable, and it has a standard electronic stability system, but it does feel more top-heavy than the other boxes — and definitely more so than convention ...