Savings at the pump are dwindling, with fuel prices starting to rise again.

In the last ten days fuel prices have increased four times, due to New Zealand's weak dollar coupled with higher crude oil costs.

Petrol is up 14 cents per litre, while diesel is up 9 cents.

Statistics New Zealand reports lower retail spending through January, largely due to fuel savings.

Spending on fuel was down 48 million dollars over the month.

But other retail sectors showed growth, particularly consumables and durables.