With many cars heading off on their biggest journeys of the year, now is a smart time to give your vehicle some extra attention before leaving on holiday or long trips.

That's the advice from the New Zealand Automobile Association, who are reminding motorists not to forget about preparing the family car before its put through its paces over the summer holidays.

The AA recommend motorists check their tyres, safety features and the battery before long journeys.

Areas the AA recommend motorists look at include tyres, safety features and the battery.

They advise to check your tyres and make sure they are in good shape. Not only does it make driving safer, but it can save money on petrol.

Check the tyre tread is not too worn. If you need to treat your car to a new tyre or two then do so, and check all tyres are properly inflated before you head off so they perform at their best.

Tired drivers and busy roads increase the holiday driving danger, so take the time to check steering, seatbelts, brakes and your car's various safety features to make sure everything is at its best.

While you may not be due for a service it's always a good idea to make sure your car is in good shape, so a quick check by your mechanic is always recommended before heading off on a long drive.

With 40 per cent of its road service callouts for dead batteries, the AA is also urging motorists to get a new one if it looks unlikely to last the summer.

Hot temperatures and long drives mean the radiator will be working overtime, so make sure it has plenty of water.

Also check the cooling system for leaks and make sure hoses are secure and in good condition.

Check the engine oil and add more if it is low. For more tips on what to do to prepare for holiday motoring, go to: www.aa.co.nz/cars/maintenance/