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2027 Mercedes-Benz SL-Class Specs: MPG, Gas Mileage, Engine Size & Dimensions

2015–2027 model years40 variantsUp to 23 MPG combined
Real-World MPG QuestionsBed Dimensions & Cargo SpaceService Intervals

2027 Mercedes-Benz SL-Class Specs at a Glance

The 2027 Mercedes-Benz SL-Class gets 16 mpg combined on the 4.0L All-Wheel Drive configuration, weighs 4,299 lbs, measures 182.7 in long. Every figure below comes from EPA, NHTSA, or manufacturer published data — no estimates.

Combined MPG
16 mpg (14 city / 21 hwy)
Best configuration: 4.0L · All-Wheel Drive · Automatic 9-spd
Engine
4.0L 8-cyl
4.0L · All-Wheel Drive · Automatic 9-spd
Curb weight
4,299 lbs
Heaviest recorded configuration: SL CLASS SL65 AMG 2DR CONVERTIBLE
Length
182.7 in · 74 in wide · 52 in tall
Wheelbase
102 in

2027 Mercedes-Benz SL-Class trims and MPG

TrimEngineTransDriveCityHwyCombined
Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive142116
Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive132016

Detailed Specifications

MPG & Fuel Economy

MPG for every year and trim

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Engine Specifications

Engine Specs for every year and trim

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Annual Fuel Cost

Fuel Cost for every year and trim

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Transmission Specifications

Transmission for every year and trim

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Drivetrain & Drive Type

Drivetrain for every year and trim

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Vehicle Class & EPA Size Category

Vehicle Class for every year and trim

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Maintenance Schedule & Service Intervals

Maintenance for every year and trim

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Dimensions & Size

Dimensions for every year and trim

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Curb Weight

Curb Weight for every year and trim

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Electric Range & Charging Time

EV Range for every year and trim

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Mercedes-Benz SL-Class Generations

Grouped by year ranges where the engine lineup, drivetrain options, and EPA class stay consistent — a derived approximation of the factory generations, not a manufacturer-published list.

YearsVariantsEnginesDriveClassBest MPG
2022–2027142.0L, 4.0LAll-Wheel Drive, Rear-Wheel DriveMinicompact Cars, Two Seaters23
2015–2020213.0L, 4.7L, 5.5L, 6.0LRear-Wheel DriveTwo Seaters23

Mercedes-Benz SL-Class — All Years Overview

YearTrimEngineTransDriveCityHwyCombinedFuel
2027Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive142116Premium Gasoline
2027Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive132016Premium Gasoline
2026Auto 9-spd, 4 cyl, 2.0 L4 · 2.0LAutomatic 9-spdRear-Wheel Drive192722Premium Gasoline
2026Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive132016Premium Gasoline
2026Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive142116Premium Gasoline
2025Auto 9-spd, 4 cyl, 2.0 L4 · 2.0LAutomatic 9-spdRear-Wheel Drive192722Premium Gasoline
2025Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive132116Premium Gasoline
2025Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive162218Premium Gasoline
2024Auto 9-spd, 4 cyl, 2.0 L4 · 2.0LAutomatic 9-spdRear-Wheel Drive202722Premium Gasoline
2024Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive142116Premium Gasoline
2023Auto 9-spd, 4 cyl, 2.0 L4 · 2.0LAutomatic 9-spdRear-Wheel Drive212723Premium Gasoline
2023Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive142216Premium Gasoline
2023Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive132116Premium Gasoline
2022Auto 9-spd, 8 cyl, 4.0 L8 · 4.0LAutomatic 9-spdAll-Wheel Drive142116Premium Gasoline
2020Auto 9-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 9-spdRear-Wheel Drive202822Premium Gasoline
2020Auto 9-spd, 8 cyl, 4.7 L8 · 4.7LAutomatic 9-spdRear-Wheel Drive172520Premium Gasoline
2019Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spdRear-Wheel Drive152318Premium Gasoline
2019Auto 9-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 9-spdRear-Wheel Drive202823Premium Gasoline
2019Auto 9-spd, 8 cyl, 4.7 L8 · 4.7LAutomatic 9-spdRear-Wheel Drive172520Premium Gasoline
2018Auto 7-spd, 12 cyl, 6.0 L12 · 6.0LAutomatic 7-spdRear-Wheel Drive132216Premium Gasoline
2018Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spdRear-Wheel Drive162519Premium Gasoline
2018Auto 9-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 9-spdRear-Wheel Drive202823Premium Gasoline
2018Auto 9-spd, 8 cyl, 4.7 L8 · 4.7LAutomatic 9-spdRear-Wheel Drive172520Premium Gasoline
2017Auto 7-spd, 12 cyl, 6.0 L12 · 6.0LAutomatic 7-spdRear-Wheel Drive132216Premium Gasoline
2017Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spdRear-Wheel Drive162519Premium Gasoline
2017Auto 9-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 9-spdRear-Wheel Drive202823Premium Gasoline
2017Auto 9-spd, 8 cyl, 4.7 L8 · 4.7LAutomatic 9-spdRear-Wheel Drive172520Premium Gasoline
2016Auto 7-spd, 12 cyl, 6.0 L12 · 6.0LAutomatic 7-spdRear-Wheel Drive142117Premium Gasoline
2016Auto 7-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 7-spdRear-Wheel Drive202723Premium Gasoline
2016Auto 7-spd, 8 cyl, 4.7 L8 · 4.7LAutomatic 7-spdRear-Wheel Drive162419Premium Gasoline
2016Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spdRear-Wheel Drive162519Premium Gasoline
2015Auto 7-spd, 12 cyl, 6.0 L12 · 6.0LAutomatic 7-spdRear-Wheel Drive142117Premium Gasoline
2015Auto 7-spd, 6 cyl, 3.0 L6 · 3.0LAutomatic 7-spdRear-Wheel Drive202723Premium Gasoline
2015Auto 7-spd, 8 cyl, 4.7 L8 · 4.7LAutomatic 7-spdRear-Wheel Drive182420Premium Gasoline
2015Auto 7-spd, 8 cyl, 5.5 L8 · 5.5LAutomatic 7-spdRear-Wheel Drive162519Premium Gasoline

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Mercedes-Benz SL-Class — Frequently Asked Questions

What is the fuel economy of the 2027 Mercedes-Benz SL-Class?

The Mercedes-Benz SL-Class is EPA-rated at up to 23 MPG combined (21 city / 27 highway), a historical peak recorded on the 2023 model year.

What engine does the 2027 Mercedes-Benz SL-Class have?

The Mercedes-Benz SL-Class uses a 4.0L 8-cylinder engine paired with an Automatic 9-spd transmission.

What years of the Mercedes-Benz SL-Class are covered here?

This page documents 35 verified Mercedes-Benz SL-Class configurations across model years 2015–2027.

Which model year of the Mercedes-Benz SL-Class is the most fuel efficient?

The 2023 Mercedes-Benz SL-Class holds the highest combined rating at 23 MPG; the 2022 sits lowest at 16 MPG, a difference of 7 MPG (about 44%) across the 12 rated years on file.

How many engine options does the Mercedes-Benz SL-Class have?

The records list 6 distinct displacements for the Mercedes-Benz SL-Class — 2L, 3L, 4L, 4.7L, 5.5L, 6L — which is why combined MPG varies between trims of the same year.

Is the 2027 Mercedes-Benz SL-Class front-wheel drive or all-wheel drive?

The Mercedes-Benz SL-Class appears in 2 drivetrain layouts across the years documented here — All-Wheel Drive, Rear-Wheel Drive — with the latest 2027 record on All-Wheel Drive.

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