Summer in New Hampshire is a beautiful time — from cruising around Lake Winnipesaukee to heading up to the White Mountains, the warm weather calls for road trips, beach days, and plenty of miles on the odometer. But with that extra driving comes extra strain on your vehicle. At Sanborn’s Auto Repair here in Laconia, NH, we see certain issues pop up more often during the summer months.

If you want to keep your car running smoothly — and avoid getting stranded on the side of Route 3 in the middle of August — here are the top ten summer car problems we see and what you can do to prevent them.

1. Overheating Engine

Hot weather, heavy traffic, and long drives can push your cooling system to the limit. If your temperature gauge creeps higher than normal or you see steam coming from under the hood, that’s a clear sign of trouble.

Our tip: Check coolant levels regularly, make sure your radiator is in good condition, and have us pressure-test your cooling system before the season heats up. We can also inspect belts, hoses, and the water pump to ensure your system keeps its cool.

2. Battery Failure

Many drivers think winter is the big battery killer — but summer heat is just as hard, if not harder. High temperatures can evaporate battery fluid and corrode terminals, leading to weak starts or complete failure.

Our tip: If your battery is more than three years old, let us test it. We’ll check the charge, inspect for corrosion, and clean the terminals so you’re not left stranded in the grocery store parking lot.

3. Air Conditioning Problems

There’s nothing worse than being stuck in summer traffic with the AC blowing warm air. Over time, refrigerant can leak, compressors can fail, and clogged cabin filters can reduce airflow.

Our tip: Before the summer heat peaks, have us inspect your AC system. We’ll check refrigerant levels, test for leaks, and make sure your system is ready to keep you comfortable, whether you’re running errands around Laconia or heading up I-93.

4. Tire Blowouts

Hot pavement and under- or over-inflated tires are a dangerous combination. High heat increases tire pressure, and worn treads are more likely to fail.

Our tip: Check your tire pressure when the tires are cool — and don’t forget the spare. We’ll also inspect for tread wear, cracks, or bulges, and recommend replacements before they become a hazard.

5. Fluid Leaks

Heat can cause motor oil, transmission fluid, and brake fluid to break down faster, increasing the risk of leaks or reduced lubrication.

Our tip: Regular maintenance is your best defense. We can check all fluid levels and top them off, as well as look for leaks around seals, gaskets, and hoses before they turn into costly repairs.

6. Brake Fade

If you’ve ever driven down a steep grade in the summer and felt your brakes get soft or less responsive, you’ve experienced brake fade. Hot weather combined with prolonged braking can reduce stopping power.

Our tip: Have us inspect your brake pads, rotors, and brake fluid. We’ll make sure your system is ready to perform, whether you’re navigating Laconia traffic or heading down the Kancamagus Highway.

7. Fuel System Issues

While vapor lock is rare in modern cars, hot weather can still cause fuel efficiency issues or strain your fuel pump. Dirty fuel filters and leaky lines can also rob your engine of performance.

Our tip: We’ll inspect your fuel system for leaks, replace filters when needed, and ensure your injectors are clean so you get the best mileage possible.

8. Windshield Cracks

Small chips from winter road debris can turn into big cracks when the summer heat hits. Glass expands in high temperatures, and even a minor imperfection can spread quickly.

Our tip: If you notice a chip, bring it in right away. We can recommend local glass specialists to repair small damage before you’re forced to replace the entire windshield.

9. Cabin Odors

From beach towels to fishing gear, summer fun often comes with wet, sandy, or muddy items in the car. If moisture lingers, it can cause mildew and musty smells.

Our tip: Vacuum regularly, use all-weather mats, and make sure the interior dries completely after any spills. We can replace your cabin air filter to improve air quality inside your vehicle.

10. Sun Damage to Interior

Direct sunlight can fade upholstery, crack dashboards, and cause plastic trim to warp.

Our tip: Use a sunshade when parked, and consider window tint or UV protectant sprays. We’ll also check your weatherstripping and seals to help keep the interior protected from heat damage.

Bonus New Hampshire Tip: Watch for Wildlife and Road Hazards

Summer nights in rural parts of Belknap County mean more deer, moose, and smaller wildlife on the roads. Add in the occasional pothole or frost heave left over from winter, and your tires and suspension can take a beating. Always drive cautiously at night and on back roads, and let us inspect your suspension if you’ve hit any unexpected bumps.

Why Preventative Maintenance Matters

At Sanborn’s Auto Repair, we believe that regular maintenance is the key to a safe, enjoyable summer on the road. Many of the problems listed above start small — a slightly worn belt, a low fluid level, a minor chip in the windshield — and can turn into major headaches if ignored.

We offer seasonal inspections that check all the key systems most likely to be stressed by summer heat. By catching issues early, we can save you time, money, and stress, and help you enjoy everything New Hampshire’s summer has to offer.

Our Local Expertise

We’re not just any auto repair shop — we’ve been serving drivers in Laconia and the Lakes Region for years. We know how the humid summer days, hilly terrain, and stop-and-go traffic during tourist season can affect your vehicle. Our technicians are experienced with many makes and models, and committed to honest, high-quality service.

When you bring your car to Sanborn’s, you’re not just getting repairs — you’re getting a trusted local partner who cares about keeping you safe on the road.

How We Can Help You This Summer

Here’s what we can check for you before you head out on your next summer adventure:

Cooling system inspection to prevent overheating
Battery test and terminal cleaning
AC performance check and refrigerant recharge if needed
Tire pressure and tread inspection (including the spare)
Brake system evaluation
Fluid level and leak check
Suspension and steering inspection after hitting potholes
Cabin filter replacement for fresher air

Your Next Step

If you’ve noticed any warning signs — from squeaky brakes to a musty smell in the cabin — or if it’s simply been a while since your last check-up, give us a call or stop by. We’ll make sure your car is ready for everything a New Hampshire summer can throw at it.

📍 Sanborn’s Auto Repair — Laconia, NH
🔧 Serving the Lakes Region with pride and expertise

Let’s keep you cool, safe, and comfortable all summer long.

Sanborn’s Auto Repair — Keeping Laconia Drivers on the Road Since Day One.

Top 10 Issues Your Car Might Face This Summer in New Hampshire — And How Sanborn’s Auto Repair in Laconia Can Help