2018 · Two-Seater · Gas

2018 Mercedes-Benz SL-Class MPG & fuel economy

The 2018 Mercedes-Benz SL-Class is a two-seater offered in 4 EPA-rated configurations. The most efficient version returns 23 MPG combined (20 city / 28 highway) on premium gasoline. Across the lineup, combined ratings range from 16 to 23 MPG. Efficiency is unchanged from the 2017 model. Among 30 two-seaters rated for 2018, it ranks 10th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,576 a year to fuel.

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Combined 23 MPG 20 MPG city · 28 MPG hwy

Driving range — not published for this model

Your fuel cost $2,576 15,000 mi/yr · $17.17 per 100 mi

Class rank, 2018 #10 of 30 Two-Seaters by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Miles per year Premium gas $/gal

Fuel average

The 2018 Mercedes-Benz SL-Class's fuel average is 9.8 km/L (10.2 L/100 km), or 23 MPG combined: 8.5 km/L in the city and 11.9 km/L on the highway.

	MPG	km/L	L/100 km
City	20	8.5	11.8
Highway	28	11.9	8.4
Combined	23	9.8	10.2

How it ranks among 2018 Two-Seaters

Full class ranking →

1smart fortwo EV108 MPGe $837
2Audi TT Roadster26 MPG $1,788
3Fiat 124 Spider30 MPG $1,975
4Mazda MX-529 MPG $2,043
5Alfa Romeo 4C28 MPG $2,116
···
10Mercedes-Benz SL-Class23 MPG $2,576
···
30Bugatti Chiron11 MPG $5,386

2018 SL-ClassOther two-seatersClass median: $3,118/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

SL-Class MPG across model years

Full history →

4 EPA-rated configurations

Configuration	Type	City	Hwy	Combined	Range	Your cost / yr
RWD · 3.0L 6-cyl turbo · 9-speed automatic SL450	Gas	20 MPG	28 MPG	23 MPG	—	$2,576
RWD · 4.7L 8-cyl turbo · 9-speed automatic SL550	Gas	17 MPG	25 MPG	20 MPG	—	$2,962
RWD · 5.5L 8-cyl turbo · 7-speed automatic AMG SL63	Gas	16 MPG	25 MPG	19 MPG	—	$3,118
RWD · 6.0L 12-cyl turbo · 7-speed automatic AMG SL65	Gas	13 MPG	22 MPG	16 MPG	—	$3,703

Specs (most efficient configuration)

Fuel: Premium gasoline
Engine / motor: 3.0L 6-cyl turbo
Transmission: 9-speed automatic
Drivetrain: RWD
Tailpipe CO₂: 383 g/mi
EPA fuel economy score: 5/10
EPA greenhouse gas score: 5/10

2018 Mercedes-Benz SL-Class vs. rivals

vs Porsche Boxster 25 MPG · $2,370/yr Boxster saves $206/yr vs Porsche Cayman 25 MPG · $2,370/yr Cayman saves $206/yr vs Acura NSX Hybrid 21 MPG · $2,821/yr SL-Class saves $245/yr vs Jaguar F-Type 26 MPG · $2,279/yr F-Type saves $297/yr vs Alfa Romeo 4C 28 MPG · $2,116/yr 4C saves $460/yr vs Audi R8 18 MPG · $3,292/yr SL-Class saves $716/yr vs Audi TT Roadster 26 MPG · $1,788/yr TT Roadster saves $788/yr vs Nissan 370z 22 MPG · $2,693/yr SL-Class saves $117/yr

Compare the 2018 SL-Class

With any other car from any year, including other SL-Class model years. Type a year to jump, e.g. "2015 Accord".

Frequently asked questions

What is the gas mileage of the 2018 Mercedes-Benz SL-Class?

Up to 23 MPG combined (20 city / 28 highway); ratings range from 16 to 23 MPG depending on configuration.

What fuel does the 2018 Mercedes-Benz SL-Class use?

Premium gasoline (premium is required or recommended by the manufacturer).

What is the fuel average in km/L for the 2018 Mercedes-Benz SL-Class?