One man is dead and two people are injured, one seriously, after a car crash in Christchurch last night.

A 24-year-old man died when a Subaru crashed into two parked cars on Wairakei Rd about 7.45pm, said Detective Sergeant Geoff Ruddick.

Mr Ruddick said a 25-year-old woman was seriously injured and a 24-year-old man received moderate injuries in the crash.

He said the cause of the crash was being investigated, but it was believed speed was a "significant contributing factor".