Electric cars and hydrogen fuel-cell vehicles may get a lot of attention, but every carmaker is still searching for ways to improve the fuel efficiency of internal-combustion engines. At its ...

Corrective action: Dealers will replace the fuel injectors. Warranty info: This service is being performed free of charge under a special warranty extension of 10 years or 120,000 miles, whichever ...

Water and fuel aren't usually a good mix, but BMW has turned to water injection technology in its ever-continuing quest for improved fuel economy and power. Its latest 1 Series prototype is fitted ...

BMW recently demonstrated water injection on a small hatchback, but its first planned production use of the feature will be on quite a different type of car. At the 2015 Pebble Beach Concours ...

One thing you typically don't want getting into your engine is water. That, however, is exactly what BMW is utilizing with its new water-injection system. What happens is that a fine mist is sprayed ...

BMW is using an old-school trick to improve the performance of one of its newest cars. The twin-turbocharged six-cylinder that powers the M4 coupes it employs as a safety cars for the Moto GP ...

While fuel-injector cleaning is often recommended by shops and dealer service centers, it probably isn’t necessary unless it’s correcting a running problem. In many cases, just using a quality ...