Noise, vibration and harshness – usually shortened to NVH – is a term used by engineers relating to the refinement of a vehicle.

First coined by Ford engineers in the 1950s, NVH is now a generic term to describe the main elements contributing to the refinement of a vehicle. This includes:

  • engine, wind and road noise
  • engine vibration characteristics
  • resonance within the cabin (which is related to the size of the cabin, its construction and the use of anti-resonance measures on specific panels)
  • suspension springing and damping
  • noise insulation