A man was taken to hospital with minor injuries after he drove his Mercedes sedan into a rock bank on the Rimutaka Hill Rd on Tuesday night.
Featherston and Greytown volunteer fire brigades attended the crash, which happened around 9.30pm in foggy and wet conditions just before the summit on the Upper Hutt side.
The car had been heading north.
Police officers were able to start the car and back it - with considerable scraping - to a layby.