When you buy a brand-new BMW, it's not just the interior and exterior that are brand new. Every mechanical component- from the engine to the tires- are brand new as well. A new BMW engine should be treated with respect and care for the first thousand or so miles to ensure that excess stresses are not placed on it that could lead to problems later on down the line. There's nothing mysterious about this process, which is easily accomplished by following BMW's guidelines.
Allow the car to warm up thoroughly before accelerating aggressively. Avoid full-throttle starts during the break-in. If you have an automatic transmission, avoid aggressive use of the throttle that will cause the gearbox to downshift and bring the engine RPMs up quickly.
Drive the car gently and smoothly for the first 1,200 miles. This is BMW's recommended break-in period to allow the engine's internals to break in properly. Use the clutch gently for the first 300 miles.
Maintain the engine's RPMs below 4,500-rpm on the tachometer for the first 1,200 miles. BMW engines are smooth, high-revving engines by nature, so this may hard to resist, but your BMW and its engine will appreciate being treated gently when brand new.
Vary the speeds at which you drive your BMW. Drive on a variety of roads, including freeways, city streets and medium-speed secondary roads. If you are attending a track day or similar sanctioned event at a race track where there are no speed limits, do not exceed 100-mph.
