Myth #1 – Diesel Engines Are Always More Expensive to Maintain
While diesel repairs can be more expensive when they happen, diesel vehicles tend to need service less often than gas-powered ones. They don’t use spark plugs, they have sturdier components, and they’re built for durability. Especially in Arizona, where high temperatures can accelerate wear on gas engines, diesel engines often prove more reliable over time if properly maintained.
Myth #2 – Gas Vehicles Are Better for Short City Trips
It’s true that gas engines warm up faster and are more suited for quick drives—but that doesn’t mean diesel engines can’t handle city traffic. Modern diesels come with advanced emission systems and improved fuel management that allow them to perform well even in stop-and-go driving. In Goodyear and Surprise, where drivers mix freeway commutes with local errands, either engine can perform well with the right care.
Myth #3 – Diesel Engines Don’t Handle Heat Well
Actually, diesel engines are built for tough conditions. Their combustion process and engine design make them more heat-tolerant than most gas engines. That said, overheating can still occur—especially if coolant levels are low or the radiator is dirty. In Arizona’s extreme heat, both diesel and gas vehicles need regular checks on their cooling systems to stay safe.
Myth #4 – Gas Engines Are Cheaper to Run
Diesel fuel often costs more per gallon, but diesel vehicles usually get better fuel economy and generate more torque—especially useful for towing or long drives. Over time, the improved mileage and engine efficiency may offset the higher fuel cost. This makes diesel a smart option for Arizona drivers who take frequent road trips or need more pulling power for work vehicles.
Myth #5 – Maintenance Is the Same for Both Engines
Diesel and gas engines have different needs. Diesel engines require regular fuel filter changes, water separator draining, and high-quality oil to handle compression heat. Gas engines, on the other hand, need frequent spark plug replacements and emissions system checks. In Surprise and Goodyear, where dusty air can clog filters and heat wears fluids faster, it’s crucial to follow the right schedule for your specific engine type.
Climate-Based Considerations for Arizona Drivers
Arizona’s hot, dry weather affects both engine types. Dusty roads can clog air filters, while high temperatures thin out oil and coolant. Diesel engines typically perform better under heavy loads and high stress, but only if the cooling and filtration systems are maintained. No matter what you drive, regular inspections become even more important in desert environments.
Choosing What’s Right for Your Driving Habits
- Drive mostly in the city? A gas engine may be more efficient short-term.
- Long highway commutes or hauling heavy loads? Diesel could save money in the long run.
- Need low upfront costs and quick service availability? Gas engines are usually cheaper to buy and fix.
- Looking for long-term durability and fuel efficiency? Diesel might be the better investment.
