More than 100 Mazdas have been stolen in Rotorua since March, prompting police to issue a warning to drivers to be extra careful.
Rotorua police crime prevention manager Inspector Brendon Keenan said figures from the police's intelligence section revealed a strong pattern of Mazdas being stolen in the past few months.
He said the figures showed almost 40 of the 100 Mazdas stolen were Demios, and about 30 each of Atenzas and Familias.
He said the vehicles were from the late 1990s to 2007 and didn't have mod-cons such as immobilisers installed.
Keenan said there was no real pattern to where the vehicles were being taken from but most of the thieves were juvenile offenders who were stealing them for joy rides sometimes ending in burnouts and were often dumped before they found another car to steal nearby.