V8 fans will again be limited to one slab of beer a day at this year's Bathurst 1000 car race.

Police will be focusing on reducing alcohol-related crime when petrol heads descend upon Mount Panorama, Bathurst, in NSW's central west, this week.

For the third year running, adult race-goers will be limited to bringing one case (24 cans) of full-strength beer or one block (36 cans) of light or mid-strength beer each day.

Restrictions also apply to one case (24 cans) of pre-mixed drinks a day or one cask of wine up to four litres.

Combinations of the options will not be allowed.