Cars splattered as paint spills on Auckland's Southern Motorway

Fresh, wet white paint is covering lanes on Auckland's Southern Motorway and motorists driving through the spill are being told to wash their vehicles.

The paint is splattered over several lanes for around 200m heading south near the Mt Wellington off-ramp.

The New Zealand Transport Agency is warning drivers heading south on SH1 to take extra care passing through the area.

It's also advising motorists they may want to consider washing their vehicle to get rid of the unintended paintwork.