Nissan is facing legal pressure over its new-technology engines after being subject to a June 2025 recall.

Some engines use a spark to ignite their fuel, and others rely on compression. What does all of that mean? And how do the two kinds of engines differ?

The innovative engine appears to be a victim of its own complexity. It couldn't come at a worse time for Nissan. Nissan's variable-compression engine once held so much promise. The so-called VC ...

Automakers brought some high-tech new V6 engines to market in the mid-2000s, beginning a gentle push away from the ...

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 ...

This engine, dubbed the "4", came in five power levels, starting with the low-compression model that featured a single-barrel carburetor that was capable of 110 horsepower.

Intake, compression, power, then exhaust. Every 4-stroke engine ever made – about 80% of all engines currently in existence – function on this principle – even rotary engines. But now ...