The MERCEDES-BENZ SL-CLASS 2018 Ownership Costs Fuel Use Service Parts Repairs Resale Valueis a luxurious sports car that offers a delightful blend of performance, comfort, and technology. However, owning such a vehicle comes with its own set of costs that go beyond the purchase price. In this article, we will break down the various expenses associated with owning a 2018 SL-Class, including fuel costs, maintenance and service expenses, parts and repairs, and resale value.
Fuel economy is one of the most immediate and noticeable costs of car ownership. The 2018 SL-Class offers several engine options, the primary one being a 3.0-liter V6 with an estimated fuel economy of about 20 mpg in the city and 28 mpg on the highway.

Let’s assume that you drive about 12,000 miles per year:
With the average gas price around $3.00 per gallon in 2023, the annual fuel cost would be:
Total Annual Fuel Cost: $1,594.29

Regular maintenance is crucial for keeping a luxury vehicle like the SL-Class in top condition. MERCEDES-BENZ recommends service every 10,000 miles or yearly, whichever comes first.
The average cost for a standard service appointment can range from $300 to $500, depending on what is required. Below is a breakdown of some typical service costs:
If you budget for one major service and one minor service per year, you’d be looking at:

Estimated Annual Maintenance Cost: $800 – $1,500
As with any vehicle, parts wear out over time and may require replacement. Luxury parts are often more expensive than those for standard vehicles. Common repairs and their costs can include:
A budget of approximately $1,000 per year for unforeseen repairs is a reasonable estimate, though this amount can vary greatly depending on driving habits and local repair costs.
Insurance costs for a 2018 Mercedes-Benz SL-Class can be significantly higher than regular vehicles. The premium may vary depending on the driver’s age, location, driving history, and the coverage options chosen. Expect the annual insurance rates to vary between:
Estimated Insurance Cost: $1,500 – $3,000
Luxury vehicles, including the SL-Class, tend to depreciate more quickly than non-luxury models. After about five years, owners can expect approximately 50-60% of the vehicle’s original value.
For the 2018 SL-Class, with a starting price around $88,000, the projected resale value five years later would range between:
Estimated Resale Value: $40,000 – $44,000
Owning a 2018 Mercedes-Benz SL-Class is certainly a pleasurable experience, but it comes with various financial commitments. From fuel costs, maintenance, parts, and repairs to insurance and depreciation, potential buyers should weigh these factors carefully. A budget of around $5,000 to $8,000 annually, including all expenses, is a prudent estimate for a comprehensive understanding of the total cost of ownership.
The annual fuel cost is approximately $1,594.29 based on average driving conditions and fuel prices.
Mercedes-Benz recommends service every 10,000 miles or once per year, whichever comes first.
The average insurance cost ranges from $1,500 to $3,000 annually, depending on various factors.
After about five years, the 2018 SL-Class can be expected to maintain about 50-60% of its original value.
Budgeting between $800 and $1,500 annually for maintenance and repairs is advisable based on typical costs.