Vehicle thefts increased 28 per cent in Hawke's Bay last year - and police are solving less than one in eight cases.
Official Information Act figures released to Hawke's Bay Today show the number of recorded vehicle thefts in the Bay increased from 455 in 2014 to 581 last year.
Offenders were caught in 71 of these cases, or 12.2 per cent of the time.
Napier MP and Labour police spokesman Stuart Nash said the resolution rate showed police were underfunded, and were forced to prioritise other areas at the expense of investigating thefts and burglaries.
"The police themselves, certainly the frontline officers, do a fantastic job. But that thin blue line is really, really stretched.