While most engines have the same number of spark plugs and cylinders, some four-cylinder blocks have two plugs for each ...
Top Speed on MSN
How BMW turned the humble inline-six into a muscular powerhouse
Here's how the modest inline-six has grown over time and been continuously developed by BMW to become one of the most ...
The Mazda Miata got quicker after losing horsepower because its new engine was lightweight, allowing it to move faster.
How the 13B-MSP Renesis evolved from earlier Mazda rotary designs, technical features explained, and common problems and maintenance issues discussed. The 13B-MSP Renesis rotary engine powered the ...
Port fuel injection (PFI) was a major milestone in the early '80s. The integration of PFI rapidly changed the way fuel was delivered by increasing fuel economy and improving engine performance. Even ...
MotorTrend on MSN
The Best and Most Disappointing Cars We Drove in 2025
In 2025, the MotorTrend team tested hundreds of new cars, trucks, and SUVs, and drove thousands of miles across over 15 ...
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