Rental cars are generally newer and better maintained than the average personal vehicle, but they also lead harder lives. They’re driven by dozens of different people each month, across every type of road and in all kinds of conditions. While serious issues are rare, there are a few mechanical problems that crop up more often in rentals than you might expect.
Knowing what to look for before you leave the lot can help you avoid delays, frustrations, and unexpected calls to roadside assistance.
Battery Trouble
Rental cars sometimes sit unused for days or even weeks between reservations. This can slowly drain the battery, leaving it weak. You might not notice until you’ve stopped somewhere remote and the car won’t restart.
Before you drive away, start the car and let it run for a minute, turning on the headlights, A/C, and radio. If anything dims or flickers, mention it to the attendant and request a different vehicle.
Tire Wear or Damage
From curbs to potholes, rental car tires take a beating. A worn tire might not be obvious until it fails at highway speed. Walk around the car and look for uneven tread wear, bulges, or nails lodged in the rubber. Don’t forget to check the spare—if the car has one—so you know it’s there in an emergency.
Brake Wear
Brakes can wear faster in rentals thanks to frequent city driving, stop-and-go traffic, and drivers with varying skill levels. On your first few miles, pay attention to squealing, grinding, or a soft brake pedal. If anything feels off, return the car immediately.
Cooling System Problems
Long climbs in hot weather can push a rental’s cooling system to the limit. Watch the temperature gauge on steep grades, and if it creeps toward the red, safely pull over and call for help. Continuing to drive could turn a manageable problem into an expensive one.
What to Do If a Problem Arises
If you spot a potential issue before you leave, ask for another car. If it happens mid-trip, follow the process in our guide on what happens if your rental car breaks down to get roadside assistance or a replacement.
Conclusion
A five-minute inspection before leaving the lot can save you hours stuck on the side of the road. Check the battery, tires, brakes, and temperature gauge early, and you’ll greatly reduce your chances of mechanical trouble during your rental.
