Diesel vehicles are renowned for their fuel efficiency, but is that enough to make them a better overall value compared to their gasoline counterparts? Beyond the initial purchase price, diesel vehicles often incur higher costs for ownership and maintenance. This is partly due to the need for a urea tank, which injects urea into the exhaust to neutralize pollutants. This so-called clean-diesel technology results in emissions that are cleaner than many gasoline vehicles, but it also adds to the maintenance burden.
Diesel engines are celebrated for their superior fuel economy. According to the U.S. Department of Energy, diesel engines can be 20-35% more fuel-efficient than their gasoline counterparts (source). However, this advantage is sometimes offset by higher costs in other areas.
Diesel vehicles often require more expensive maintenance and repairs. This is due to the complexity of modern diesel engines and the additional systems required to meet emissions standards. For instance, the urea tank, which is part of the selective catalytic reduction (SCR) system, needs regular refilling and maintenance. According to Vincentric, a firm specializing in the total cost of ownership analysis, diesel vehicles generally have higher insurance, repair, and maintenance costs compared to gasoline vehicles (source).
While diesel vehicles tend to depreciate at a slower rate on a percentage basis, their higher initial purchase price means that the total dollar amount of depreciation can be greater. Vincentric's research found that diesel vehicles often have higher overall depreciation costs compared to their gasoline equivalents.
Vincentric analyzed 23 diesel vehicles available in the U.S., including 11 commercial vehicles and 10 consumer vehicles. The study examined the total cost of ownership over five years, assuming 20,000 miles driven annually. According to this research, nine diesel vehicles had five-year ownership costs lower than their gasoline counterparts. Here are some key findings:
| Vehicle Model | Fuel Savings (USD) | Total Ownership Cost (USD) | Gasoline Equivalent Model | Ownership Cost (USD) |
|---|---|---|---|---|
| Mercedes-Benz GL350 | $4,750 | $101 more | GL450 4Matic | Higher |
| BMW S350 Bluetec 4Matic | $4,003 | Lower | S-Class Gas Model | Higher |
While diesel vehicles offer impressive fuel economy, their higher initial purchase price and increased maintenance costs can offset these savings. However, for certain models like the Mercedes-Benz GL350 Bluetec and BMW S350 Bluetec 4Matic, the overall cost savings can be substantial. It's essential to consider all aspects of ownership, including fuel economy, maintenance, insurance, and depreciation, when deciding whether a diesel vehicle is the right choice for you.
For more detailed information on the total cost of ownership for diesel vehicles, you can visit Vincentric's website.
By considering these factors, you can make a more informed decision about whether a diesel vehicle is the right choice for your needs.
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