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Mercedes-Benz SL-Class Curb Weight: 3,825 lbs to 3,957 lbs

The 2021 Mercedes-Benz SL-Class ranges from 3,825 lbs (Sl Class Sl450 2dr Convertible) to 3,957 lbs (Sl Class Sl550 2dr Convertible), a spread of 132 lbs across 2 recorded configurations.

Latest model year (2027):

3,825–3,957 lbs

VerifiedNHTSA Canadian Vehicle Specifications · Verified September 18, 2026
OverviewMPGEngine SpecsFuel CostTransmissionDrivetrainVehicle ClassMaintenanceDimensionsCurb WeightEV Range

Mercedes-Benz SL-Class Curb Weight — All Years

YearBody Style / VariantCurb WeightWheelbaseLength
2021Config 1 of 2SL CLASS SL550 2DR CONVERTIBLE3,957 lbs101.968 in182.283 in
2021Config 2 of 2SL CLASS SL450 2DR CONVERTIBLE3,825 lbs101.968 in182.283 in
2020Config 1 of 2SL CLASS SL550 2DR CONVERTIBLE3,957 lbs101.968 in182.283 in
2020Config 2 of 2SL CLASS SL450 2DR CONVERTIBLE3,825 lbs101.968 in182.283 in
2019Config 1 of 3SL CLASS SL63 AMG 2DR CONVERTIBLE4,068 lbs101.968 in182.677 in
2019Config 2 of 3SL CLASS SL550 2DR CONVERTIBLE3,957 lbs101.968 in182.283 in
2019Config 3 of 3SL CLASS SL450 2DR CONVERTIBLE3,825 lbs101.968 in182.283 in
2018Config 1 of 4SL CLASS SL65 AMG 2DR CONVERTIBLE4,299 lbs101.968 in182.677 in
2018Config 2 of 4SL CLASS SL63 AMG 2DR CONVERTIBLE4,068 lbs101.968 in182.677 in
2018Config 3 of 4SL CLASS SL550 2DR CONVERTIBLE3,957 lbs101.968 in182.283 in
2018Config 4 of 4SL CLASS SL450 2DR CONVERTIBLE3,825 lbs101.968 in182.283 in
2017Config 1 of 4SL CLASS SL65 AMG 2DR CONVERTIBLE4,299 lbs101.968 in182.677 in
2017Config 2 of 4SL CLASS SL63 AMG 2DR CONVERTIBLE4,068 lbs101.968 in182.677 in
2017Config 3 of 4SL CLASS SL550 2DR CONVERTIBLE3,957 lbs101.968 in182.283 in
2017Config 4 of 4SL CLASS SL450 2DR CONVERTIBLE3,825 lbs101.968 in182.283 in
2016Config 1 of 3SL CLASS SL65 AMG 2DR CONVERTIBLE4,299 lbs101.575 in182.283 in
2016Config 2 of 3SL CLASS SL63 AMG 2DR CONVERTIBLE4,068 lbs101.575 in182.283 in
2016Config 3 of 3SL CLASS SL550 2DR CONVERTIBLE3,935 lbs101.575 in181.89 in
2015Config 1 of 3SL CLASS SL65 AMG 2DR CONVERTIBLE4,299 lbs101.575 in182.283 in
2015Config 2 of 3SL CLASS SL63 AMG 2DR CONVERTIBLE4,068 lbs101.575 in182.283 in
2015Config 3 of 3SL CLASS SL550 2DR CONVERTIBLE3,935 lbs101.575 in181.89 in

Curb weights sourced from the NHTSA Canadian Vehicle Specifications database and recorded per body style, with fluids and a full fuel tank but no occupants or cargo.

How the figure moved since 2015

The lightest 2015 record is 3,935 lbs; the lightest 2021 record is 3,825 lbs — 110 lbs lighter (2.8%).

At the top of the range the 2021 file reaches 3,957 lbs against 4,299 lbs in 2015, a 342 lbs reduction — driven by which configurations exist, not by the same truck gaining mass.

Where the mass sits: 50/50

NHTSA records a 50/50 distribution, so the 3,825 lbs splits to roughly 1,913 lbs on the front axle and 1,912 lbs on the rear.

Weights, track and weight distribution from the NHTSA Canadian Vehicle Specifications.

Questions these figures answer

How much does a 2021 Mercedes-Benz SL-Class weigh?

Between 3,825 lbs (Sl Class Sl450 2dr Convertible) and 3,957 lbs (Sl Class Sl550 2dr Convertible), depending on the configuration.

How is the SL-Class's weight distributed?

50/50 front to rear in the NHTSA record — about 1,913 lbs on the front axle and 1,912 lbs on the rear at a 3,825 lbs curb weight.

View full Mercedes-Benz SL-Class specs

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