Keeping Your Car Cool and Reliable This Summer

The British summer, with its unpredictable weather and potential for spontaneous road trips, demands a car that's up to the task. While general car maintenance is crucial year-round, the warmer months can expose specific vulnerabilities in your vehicle. Neglecting these can turn a pleasant drive into a costly breakdown. Fortunately, a few proactive checks can ensure your car remains a dependable companion, whether you're navigating the lanes of the UK or embarking on a European adventure. This guide will walk you through the essential steps to keep your car in peak condition during the summer heat.

1. The Crucial Coolant Check

Your engine works significantly harder to maintain an optimal temperature when faced with intense summer heat. Consequently, it's vital to monitor your coolant levels more frequently, especially before embarking on any extended journeys. Many drivers mistakenly believe they can bypass antifreeze during summer and simply use water. However, this is a critical error. Without the correct antifreeze-to-water dilution, your coolant system can become compromised, potentially leading to serious engine damage when the weather eventually cools. Always adhere to the manufacturer's recommended mix, typically a 50/50 ratio of water and antifreeze. A word of caution: never attempt to open the coolant tank cap immediately after driving. The system is under pressure, and releasing it can cause scalding hot water to spray out. Always allow the engine to cool down completely, then unscrew the cap slowly to release any residual pressure safely.

2. Tyre Integrity: Your Sole Contact with the Road

Your tyres are the only components connecting your vehicle to the tarmac, making their condition paramount for safety and performance. In summer, the risks associated with tyres are amplified. Elevated temperatures can cause tyres to expand, increasing the likelihood of a potentially dangerous blowout. Furthermore, prolonged exposure to direct sunlight can degrade the rubber, leading to cracking. This is particularly problematic for vehicles that store their spare wheel externally, as it may become unusable when you need it most. Beyond a visual inspection for any signs of cracking, bulging, or other defects, it's essential to check the pressure in all your tyres, including the spare. Ensure the tread depth meets the legal minimum of 1.6mm across a continuous band covering at least three-quarters of the tyre's width. If you have any doubts about your tyres' condition, it's always best to have them inspected by a qualified professional.

3. Air Conditioning: Stay Cool, Stay Sane

It's tempting to save your air conditioning for the absolute hottest days, but this can lead to disappointment if it hasn't been maintained. Air-con units that have remained dormant for months are prone to developing mould, which can cause unpleasant musty odours, or suffer cracked seals. Cracked seals allow the refrigerant gases to escape, rendering the system ineffective. To prevent this, it's advisable to use your air conditioning sporadically throughout the year, even for short bursts. Test it thoroughly well in advance of any long summer trips. If your system isn't performing as it should, a visit to your local garage is recommended. Often, a simple re-gas can resolve the issue, typically costing between £50 and £150, depending on the vehicle. However, if you find yourself needing frequent re-gases, it could indicate a more significant and costly problem, such as a faulty condenser.

4. Wipers and Visibility: Battling Summer Showers

The British summer is renowned for its unpredictability, and you might encounter anything from scorching sun to sudden downpours. When rain strikes, clear visibility is non-negotiable. Ineffective windscreen wipers can drastically impair your view of the road. As Which? car expert Dino Buratti explains, hot, sunny weather can accelerate the deterioration of wiper blades, especially if your car is regularly parked in direct sunlight. Visually inspect your wiper blades for any signs of cracking or wear. Test their effectiveness by using your screen wash. If they struggle to clear water, leave streaks, or appear damaged, it's time for a replacement. Wiper blades are generally straightforward to fit yourself, but many garages or car parts shops will happily do it for a small fee. Don't forget to check your rear wiper blade too!

5. The 12v Battery: More Than Just a Winter Worry

While dead batteries are often associated with the cold of winter, extreme heat can be just as detrimental. A battery that is already nearing the end of its lifespan can be pushed over the edge by sustained periods of hot weather. Ageing batteries can fail unexpectedly, but there are often warning signs. If your car is taking longer to start, or if the interior lights dim significantly during startup, it could indicate a weakening battery. Should you need to jump-start your car, ensure you follow the correct safety procedures. If you suspect your battery is not in optimal condition, or if you're planning a lengthy summer excursion, it's wise to have it professionally checked. Remember, as the summer holidays approach, many drivers will be seeking garage appointments, so book any necessary checks well in advance.

6. Bike Racks: Secure Your Summer Adventures

Summer is the perfect time for cycling adventures, but if you're planning to transport bikes using a car-mounted rack, a few pre-trip checks are essential, especially if the rack hasn't been used since the previous summer. Which? cars editor, Will Stapley, shares a personal anecdote: 'Only after I’d loaded four bikes onto my car last summer did I think to check the rack’s condition. I hadn't used it for months and on closer inspection rust had attacked a number of the joints, leaving the rack dangerously unsafe.' This highlights the importance of inspecting all joints and fixings for signs of rust or damage. If you're using a roof-mounted bike rack, ensure that the roof bars or roof rack it attaches to are also in good condition and securely fitted.

7. Breakdown Cover: Peace of Mind on the Road

Despite your best efforts in car maintenance, the possibility of a breakdown always exists. Having adequate breakdown cover provides invaluable peace of mind. However, it's crucial to review your policy details. Check that it includes cover for breakdowns at your home address, as research indicates this is where vehicles are most likely to experience issues, yet cheaper policies often exclude this. If you're planning to drive abroad this summer, verify that your cover is valid for all the countries you intend to visit. You might be surprised to learn that you may already have breakdown cover. Many new cars come with comprehensive cover, and older cars might include a year's cover if serviced at an approved dealership. It's also worth checking if breakdown cover is bundled with your car insurance or even a packaged bank account. Comparing policies can help you find the best value and coverage for your needs.

Common Summer Car Concerns Addressed:

Frequently Asked Questions:

Q1: What's the biggest risk to my car in summer?
Engine overheating due to increased workload and potential coolant issues is a major risk. Tyre blowouts due to heat expansion are also a significant concern.

Q2: Can I just use water in my coolant system in summer?
No, it's strongly advised against. Antifreeze contains vital anti-corrosion and anti-boil properties that water alone cannot provide. Using only water can lead to engine damage.

Q3: How often should I check my tyre pressure?
It's recommended to check tyre pressure at least once a month, and before any long journeys, especially during hot weather when pressures can fluctuate more rapidly.

Q4: My car's air conditioning isn't blowing cold air. What should I do?
This typically indicates a low refrigerant level, often due to a leak. You'll need to have it checked by a qualified mechanic who can identify and repair the leak before re-gassing the system.

Q5: Is it safe to drive with worn wiper blades in the summer?
Even in summer, sudden downpours can occur. Worn wiper blades compromise visibility, making it unsafe to drive. Replace them if they streak or fail to clear water effectively.

By undertaking these straightforward checks and adopting a proactive approach to maintenance, you can significantly reduce the risk of encountering problems and ensure your car remains a reliable and comfortable mode of transport throughout the summer months. Enjoy your travels!

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