The S63 and the N63 are 4.4-liter V8 engines made by BMW and installed into its vehicles. While these two V8 engines have several similarities, they also have significant differences. Let's start ...

The N63 might not be the most reliable engine that BMW has made in recent years, but there's no doubting its power. It can be found under the hood of a range of high-end BMW models, including the ...

Power is sent to four wheels via BMW’s xDrive system ... you’ll discover that on start up and at low revs the M550i’s N63 V8 engine is actually the more charismatic of the two.