Diesel engines have been around for decades, but they continue to generate both interest and controversy. On the one hand, diesel engines are known for their excellent fuel economy and high torque, which provides strong acceleration. However, diesel engines also have some significant downsides like higher upfront costs, more expensive fuel, and the foul exhaust that contains pollutants like soot and nitrogen oxides.
For drivers interested in an efficient vehicle that can handle heavy loads, a diesel engine is worth considering. Diesel-powered vehicles typically offer 20 to 40 percent better fuel economy than comparable gas vehicles. Diesel engines also produce high amounts of torque, so they work well for pulling heavy loads. Many large vehicles like trucks, vans, and SUVs rely on diesel power.
However, diesel engines have some significant downsides to keep in mind. Diesel vehicles are more expensive than gas vehicles, often costing $10,000 or more extra. Diesel fuel is also typically more expensive than regular gasoline. Diesel engines require periodic exhaust treatment to reduce pollution, and they produce noxious emissions like soot and nitrogen oxides. As a result, many cities and states have imposed extra fees and taxes on diesel vehicles.
Diesel engines also require more frequent oil changes and other maintenance. The high-pressure fuel injection systems in diesel engines are complex and can be expensive to repair if there is a problem. Diesel engines may last longer than gas engines in terms of miles, but they typically require more frequent service visits to keep running well.
For many drivers, the improved fuel efficiency and performance of a diesel engine are appealing. However, the higher costs, more expensive fuel, frequent maintenance, and environmental impact are significant downsides to consider based on your needs and budget. If fuel economy and torque are most important, a diesel could be right for you. But for most drivers, a gas-powered vehicle is probably a more practical and affordable choice.