Summer in New Zealand means sunshine, family holidays, and scenic road trips. But before you pack the car and hit the open road, it’s essential to make sure your vehicle is in top shape. Hot weather and long drives can push your car harder than usual, increasing the risk of breakdowns if it’s not properly maintained.
While winter conditions can be harsh on a car, summer poses its own challenges. High temperatures can stress your engine, tyres, and air conditioning system, while long hours on the road can expose any underlying issues. A simple pre-summer service ensures everything is running smoothly and helps avoid unexpected breakdowns during your holiday.
Regular vehicle maintenance also helps:
- Improve fuel efficiency during long drives
- Keep passengers comfortable in the heat
- Protect your engine from overheating
- Extend your vehicle’s lifespan
- Ensure safety on unfamiliar or rural roads
1. Check Your Cooling System
Your engine’s cooling system is the first line of defence against overheating in summer. Ensure your radiator, hoses, and coolant levels are in good condition. Coolant (or antifreeze) prevents the engine from getting too hot while protecting internal components from corrosion.
Quick tips:
- Check coolant levels and top up if needed (use the right type for your vehicle)
- Inspect radiator and hoses for leaks or cracks
- Have a professional flush the cooling system if it hasn’t been done recently
2. Test the Air Conditioning System
There’s nothing worse than a failed air conditioner on a long summer drive. If your AC isn’t blowing cold air or has a musty smell, it’s time for a service.
What to check:
- Cabin air filter – clogged filters reduce airflow and cooling
- Refrigerant level – a top-up may be needed for optimal performance
- System leaks or strange noises – could indicate compressor issues
3. Inspect Your Tyres
Summer heat can affect tyre pressure and wear. Underinflated tyres reduce fuel efficiency and increase the risk of blowouts, while overinflated ones can reduce grip.
Before you go:
- Check tyre pressure (including the spare)
- Look for cracks, bulges, or uneven tread wear
- Ensure tread depth is at least 1.5mm (NZ’s legal minimum)
- Rotate or replace tyres if needed
4. Check the Battery
Hot weather accelerates battery fluid evaporation and corrosion, which can leave you stranded if not caught early.
Tips for summer:
- Check battery terminals for corrosion
- Ensure the battery is securely mounted
- Test the voltage or have a professional check its condition
5. Replace Wiper Blades and Top Up Fluids
While summer means sunshine, it can also bring sudden rain showers or dusty conditions. Worn-out wiper blades reduce visibility, especially when sun glare hits your windscreen.
Your summer fluid checklist:
- Washer fluid – top up with a bug-resistant formula
- Engine oil – check level and quality
- Brake and transmission fluids – inspect for leaks and top up if needed
Replacing wipers and topping up fluids is a simple step that can make a big difference to safety and comfort on the road.
6. Check Brakes and Suspension
With more traffic on the roads during summer holidays, you’ll rely on your brakes more than ever. Have your brake pads, discs, and fluid inspected to ensure optimal stopping power.
Suspension also takes a beating on long trips, especially if you’re carrying luggage or towing. Checking shock absorbers and springs helps maintain control and ride comfort.
7. Lights, Belts, and Hoses
Summer road trips often include early starts or late-night drives, so all lights, headlights, brake lights, and indicators must be working properly. Inspect drive belts and hoses too, as heat can cause cracking or stretching.
8. Don’t Forget the Essentials
Apart from the mechanical side, make sure you’re prepared for the journey itself:
- Emergency kit ( jumper cables, torch, first-aid kit)
- Tyre inflator or repair kit
- Sunshade and bottled water for passengers
- Updated maps or navigation apps