Your engine needs a steady stream of clean air to function properly, and it's the job of the mass air flow (MAF) sensor to measure and regulate the amount of clean air entering the intake. The engine ...

Mass air flow sensors fail most often in cars but a $20 air filter replacement every 12,000 miles prevents the $250-400 repair bills most drivers face.

So, your M5 is occasionally entering the feared limp-mode and starts to feel as if you're driving a Prius. Moreover, it's always happening when you're trying to overtake someone. Other times, the car ...