: Some long-term owners have reported mechanical issues such as oil starvation, crankshaft flex, and connecting rod failures if not meticulously maintained. Modern Legacy and Sim Racing

: Compared to the M12, the M400 added a front anti-roll bar, stiffer springs, and unique shocks to handle its increased power-to-weight ratio (400 bhp per ton, hence the name). The Driving Experience

The M400 was built as the more focused, track-oriented version of the Noble M12. It features a heavily massaged mid-mounted engine. 0–60 mph : 3.2 seconds.

Because of its legendary status, the 2006 Noble M400 has been featured in several modern racing simulators:

Owners and reviewers often describe the M400 as "scary fast" due to its complete lack of "nannies" like ABS, traction control, or stability control. While it is surprisingly easier to drive around town than some of its rivals due to a relatively supple suspension, it demands extreme focus on the limit.