Gull fuel prices are being discounted by 10cents a litre today and tomorrow.

The discount day started at 7am today and continues through until 12pm tomorrow.

General manager Dave Bodger says even bigger savings are possible at Gull's manned sites, when paired with Countdown fuel vouchers.

'We're all about delivering value. Today's discount day, which starts at 7am, allows hard working kiwi motorists to fill up and save before the weekend.”

91 octane is $2.06 at manned site and $2.03 at unmanned sites compared to $2.17 at other service stations.

Diesel is $1.36 at unmanned sites and $1.39 at manned sites.

Automobile Association spokesperson Mark Stockdale says commodity prices or exchange rates are a little changed since the last price cut in August 13, but expectations are that global prices will fall due to increased supply.