A knocking sound from the engine often triggers worst-case assumptions, but piston slap is a far more common—and usually less dangerous—culprit. It occurs when a piston lightly contacts the cylinder ...

For those who don't want a quieter car, BMW's new idea fills the cabin with authentic engine noise.

BMW's Active Sound Design tech replicates engine noise inside the M5's cabin using the car stereo's speakers. What ever happened to just rolling down the windows? Antuan Goodwin Senior Writer, ...

We may receive a commission on purchases made from links. Car engines derive power from thousands of miniature explosions contained within their cylinders every minute. We quickly become accustomed to ...

View post: 7 Cars I’ve Reviewed This Year That I’d Buy Right Now If I Could In years past, there’s been no way to manually take control over the level and kind of sound coming into the cabin.

My Subaru Impreza – ‘03 RS model (2.5l) - has begun to make a knocking noise (similar to a diesel engine) during start up in the morning. It slowly fades as the car warms up. The only think I can ...