Used 2018 Mercedes-Benz SL SL 550 Roadster 2D
Pricing
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Values and Prices
Fair Purchase Price is determined by collecting thousands of actual consumer vehicle purchase prices, plus data from national vehicle registration databases and several other reliable third-party sources.
Estimated Values
Condition | Trade-In Value | Private Party Value | ||
|---|---|---|---|---|
Excellent | $40,230 | $42,770 | ||
Very Good | $39,030 | $41,470 | ||
Good | $37,630 | $40,070 | ||
Fair | $34,130 | $36,370 |
Estimated Trade-In Values for the 2018 Mercedes-Benz SL SL 550 Roadster 2D range from about $34,130 to $40,230 depending on vehicle condition. Estimated Private Party Values range from about $36,370 to $42,770 depending on vehicle condition. Valid for ZIP Code 77632 through 10/3/2026.
2018 Mercedes-Benz SL SL 550 Roadster 2D Depreciation
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2018 Mercedes-Benz SL SL 550 Roadster 2D Annual Depreciation
Year | Vehicle Depreciation* | Resale Value | Trade-In Value | ||
|---|---|---|---|---|---|
2023 | $16,349 | $46,208 | $44,104 | ||
2024 | $5,537 | $40,671 | $38,731 | ||
2025 | $7,629 | $33,042 | $31,047 | ||
Now | + $7,858 | $40,900 | $38,400 |
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2-Year Forecasted Depreciation
*Depreciation for the last 12 months of the private party resale value.
2018 Mercedes-Benz SL SL 550 Roadster 2D Depreciation
Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.
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Specifications
Dimensions, Weights & Capacities
Curb Weight | 3959 lbs. | ||
|---|---|---|---|
Fuel Capacity | 19.8 gallons | ||
Front Head Room | 39.1 inches | ||
Front Leg Room | 42.9 inches | ||
Max Seating Capacity | 2 | ||
Minimum Ground Clearance | 3.7 inches | ||
Overall Length | 182.3 inches | ||
Front Shoulder Room | 55.5 inches | ||
Trunk or Cargo Capacity | 13.5 cu.ft. | ||
Turning Diameter | 36.2 feet | ||
Wheel Base | 101.7 inches | ||
Width with mirrors | 82.6 inches |
Exterior
Adaptive Headlights | Available | ||
|---|---|---|---|
Alloy Wheels | Available | ||
Moon Roof/Sun Roof | Available | ||
Number of Doors | 2 doors | ||
Panorama Moon Roof | Available | ||
Power Folding Exterior Mirrors | Available | ||
Power Retractable Top | Available | ||
Privacy Glass | Available | ||
LED Headlights | Available |
Fuel Economy
City | 17 mpg | ||
|---|---|---|---|
Highway | 25 mpg | ||
Combined | 20 mpg |
Mechanical
Drivetrain | RWD | ||
|---|---|---|---|
Transmission Type | Automatic | ||
9 speed | Available | ||
Recommended Fuel | Premium | ||
Hill Start Assist | Available | ||
Parking Assist System | Available |
Performance
Horsepower | 449 @ 5500 RPM | ||
|---|---|---|---|
Torque | 516 @ 1800 rpm | ||
Engine | V8, Twin Turbo, 4.7 Liter | ||
0 to 60 | 4.3 seconds | ||
Top Speed | 155 mph |
Warranty
Basic | 4 years / 50000 miles | ||
|---|---|---|---|
Powertrain | 4 years / 50000 miles | ||
Corrosion | 4 years / 50000 miles |
2018 Mercedes-Benz SL SL 550 Roadster 2D Standard Features
2018 Mercedes-Benz SL
KBB.com Review
If power and prestige are as important to you as comfort and luxurious accouterments, they all converge in the 2018 Mercedes SL. Equally beneficial is a retracting hardtop roof that morphs the SL from secure coupe to wind-in-your-hair convertible. Even higher-power Mercedes-AMG models are available (and reviewed separately).
If a price that begins near — and can easily exceed — six figures doesn’t already deter you from the Mercedes-Benz SL, you may reconsider if you crave a purer sports car rather than a grand tourer. If that’s the case, the Porsche 911 and Jaguar F-Type offer more edge.
2018 Mercedes-Benz SL
KBB.com Consumer Reviews
Consumer Rating
2018 Mercedes-Benz SL SL 550 Roadster 2D Safety
Safety Features & Technology
Compare to Similar Vehicles
 Used 2018 Mercedes-Benz SL SL 550 Roadster 2D |  Used 2020 Mercedes-Benz SL |  Used 2018 Porsche 718 Boxster |  Used 2018 BMW M4 | ||
|---|---|---|---|---|---|
| Price | $44,200 | $50,500 | $44,600 | $40,400 | |
| KBB.com Rating | N/A | N/A | 4.7 | 4.1 | |
| Consumer Rating | 4.6 | 4.6 | 5.0 | 3.8 | |
| Fuel Economy | City 17/Hwy 25/Comb 20 MPG | City 20/Hwy 28/Comb 22 MPG | City 20/Hwy 26/Comb 22 MPG | City 17/Hwy 25/Comb 20 MPG | |
| Fuel Type | Gas | Gas | N/A | N/A | |
| Seating Capacity | 2 | 2 | 2 | 4 | |
| Basic Warranty | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | |
| Horsepower | 449 @ 5500 RPM | 362 @ 5500 RPM | 350 @ 6500 RPM | 425 @ 5500 RPM | |
| Engine | V8, Twin Turbo, 4.7 Liter | V6, Twin Turbo, 3.0 Liter | 4-Cyl, Turbo, 2.5 Liter | 6-Cyl, Twin Turbo, 3.0 Liter | |
| Drivetrain | RWD | RWD | RWD | RWD |