Close the windows and glasssunroof

Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption.

    See also:

    Body and safety: The safest BMW 3-Series yet
    The new BMW 3-Series offers its passengers exceptional active and passive safety. Judicious selection of materials, a high-strength structure and an intelligent lightweight design concept allow th ...

    The M Formula
    Following the M car formula, the 1M features increased power, a manual transmission, rear-wheel drive, a modified suspension, fat tires and a distinctive look — perhaps more distinctive than the o ...

    5 Series in the Market
    The things that trouble me about the 5 Series — high price, fewer standard features than some competing models — are things that sort themselves out. If BMW is asking too much for too little, cons ...