Hot cars, hidden dangers

As temperatures continue to rise across Oman during the summer months, motorists are being reminded that extreme heat can be just as demanding on vehicles as it is on people. While drivers seek shade and air-conditioned comfort, cars are left to endure relentless exposure to scorching temperatures that can quietly compromise performance and increase the likelihood of unexpected breakdowns.
From overheating engines and weakened batteries to worn tyres and struggling air-conditioning systems, summer presents a unique set of challenges for vehicle owners. Automotive experts say that many of these issues can be avoided through routine maintenance and early inspections, saving drivers both time and costly repair bills.
The impact of high temperatures is often underestimated. Modern vehicles are engineered to operate in demanding environments, but prolonged exposure to extreme heat places additional stress on critical systems. As a result, workshops and garages across the country typically witness a rise in heat-related mechanical problems during the hottest months of the year.
Among the most vulnerable components is the engine cooling system. Designed to regulate engine temperature, the system relies on coolant, radiators, hoses and fans working together efficiently. Any weakness within this network can quickly lead to overheating, particularly during long journeys or heavy traffic conditions.
“Overheating remains one of the most common problems we encounter during summer,” said Adel Mohammed, a local garage owner in Muscat. “In many cases, drivers ignore small warning signs such as coolant leaks or rising temperature gauges. What starts as a minor issue can eventually lead to major engine damage if not addressed promptly.” According to him, preventative maintenance is often far less expensive than repairing the consequences of neglect.
Another component that suffers significantly in hot weather is the vehicle battery. While many motorists associate battery failures with winter conditions, excessive heat can be equally damaging. High temperatures accelerate chemical reactions within the battery, causing internal deterioration and reducing its lifespan.
Experts recommend checking battery performance before the peak summer season, particularly for vehicles that are more than two years old. Regular inspections can help identify signs of weakness before drivers find themselves stranded with a vehicle that refuses to start.
Tyres also face increased stress during periods of intense heat. Road surfaces can become extremely hot under direct sunlight, increasing tyre temperatures and internal pressure levels. Combined with underinflation, overinflation or worn tread, this can create a dangerous situation that compromises road safety.
Automotive specialists advise motorists to check tyre pressure regularly and ensure tyres meet manufacturer recommendations. They also stress the importance of replacing tyres that show signs of excessive wear, cracks or ageing.
Air-conditioning systems, meanwhile, become indispensable during Oman’s summer. A poorly functioning cooling system not only affects passenger comfort but can also contribute to driver fatigue and reduced concentration behind the wheel.
“Many vehicle owners wait until the air-conditioner stops cooling before seeking assistance,” the garage owner noted. “A simple inspection before summer can identify refrigerant leaks, blocked filters or worn components and prevent more expensive repairs later.” Beyond mechanical maintenance, simple everyday habits can also help reduce heat-related stress on vehicles. Parking in shaded areas whenever possible, using reflective windshield covers and avoiding prolonged exposure to direct sunlight can significantly lower cabin temperatures and protect interior materials from premature wear.
Regular oil changes also play an important role during hot weather. Engine oil helps lubricate moving components and dissipate heat. Old or degraded oil loses its effectiveness, increasing friction and potentially affecting engine performance.
With summer temperatures expected to remain high for the coming months, industry professionals emphasise that prevention remains the most effective strategy. Routine inspections, timely servicing and attention to warning signs can help motorists avoid inconvenient breakdowns and ensure their vehicles remain reliable throughout the season.