Mercedes-Benz SL-Class Specs — Dimensions & Weight by Generation

Quick answer

The current Mercedes-Benz SL-Class is 182.3″ long, 74″ wide, on a 101.6″ wheelbase, weighing 4,068 lb. Since 2008 it has grown 2% in length and gained -7% in weight. At 15.2 feet it fits a standard garage and fits a street parking space.

Every Mercedes-Benz SL-Class generation, measured

One row per generation. Watch the weight column — that is where most of the change happens for the Mercedes-Benz SL-Class, -326 lb of it since 2008, and it is the number that decides fuel use, tyre wear and how far the car takes to stop.

FIG.01·Mercedes-Benz SL-Class dimensions by generation
Generation	Length	Width	Height	Wheelbase	Curb weight
2008–2012	178.7″	72″	51.2″	100.8″	4,394 lb
2013–2021	182.3″	74″	51.2″	101.6″	4,068 lb

ROWS 2·SOURCE NHTSA vPIC / Transport Canada

From 2008 to today the SL-Class gained 3.5″ of length (2%) and -326 lb of weight (-7%). A modern compact often outweighs the mid-size car of a generation before.

SL-Class year by year

Measured every model year, not just at generation changes — 14 years on record for the Mercedes-Benz SL-Class. Small moves inside a generation are facelifts; the jumps are the 2 new platforms below.

FIG.02·Mercedes-Benz SL-Class dimensions by model year
Model year	Length	Width	Wheelbase	Curb weight	Body styles
2021	182.3″	74″	102″	3,891 lb	2
2020	182.3″	74″	102″	3,891 lb	2
2019	182.3″	74″	102″	3,951 lb	3
2018	182.7″	74″	102″	4,037 lb	4
2017	182.7″	74″	102″	4,037 lb	4
2016	182.3″	74″	101.6″	4,101 lb	3
2015	182.3″	74″	101.6″	4,101 lb	3
2014	182.3″	74″	101.6″	4,101 lb	3
2013	182.3″	74″	101.6″	4,101 lb	3
2012	180.7″	71.7″	100.8″	4,310 lb	2
2011	180.7″	71.7″	100.8″	4,418 lb	4
2010	180.7″	71.7″	100.8″	4,418 lb	4
2009	180.7″	71.7″	100.8″	4,418 lb	4
2008	178.7″	72″	100.8″	4,422 lb	4

ROWS 14·SOURCE Transport Canada vehicle specifications

Will a SL-Class fit

The practical question behind every dimensions search, and for a 15.2-foot Mercedes-Benz SL-Class it has a straight answer. A single-car garage in the US is typically 20 feet deep and a street parking space about 18, so the SL-Class clears the garage by 3.8 ft. We allow a foot of clearance in both — nobody parks to the millimetre.

FIG.02·Mercedes-Benz SL-Class — will it fit
Space	Typical size	This car	Verdict
Single garage	20 ft deep	15.2 ft	Fits, with room to open the door
Street parking space	18 ft	15.2 ft	Fits comfortably
Standard parking bay width	8.5 ft wide	6.2 ft	Room to open doors both sides

ROWS 3·SOURCE ForCar, computed from vehicle dimensions

Against cars of the same length

Compared with 1,013 vehicles within ten inches of the same length — a fair proxy for «cars of this size», regardless of what the marketing calls them.

FIG.03·Mercedes-Benz SL-Class against similar-sized cars
Measure	This car	Typical car of this length	Difference
Width	74″	71.7″	+2.3″
Wheelbase	101.6″	106.3″	-4.7″
Curb weight	4,068 lb	3,510 lb	558 lb

ROWS 3·SOURCE ForCar, computed across vehicles of similar length

A longer wheelbase for the same overall length means shorter overhangs — usually more cabin space and a steadier ride. At 4,068 lb the Mercedes-Benz SL-Class is 558 lb heavier than typical for its size, which generally shows up as fuel economy and stopping distance.

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How we measure

Dimensions come from NHTSA vPIC and Transport Canada vehicle records — manufacturer-declared figures, held in metric and converted to inches and pounds for display, 14 measured model years for the Mercedes-Benz SL-Class between 2008 and 2021.

One row per generation, not per model year: manufacturers rarely change the body between facelifts, and the Mercedes-Benz SL-Class fits into 2 rows instead of 14. Where a generation offered several body styles, the figures are the base measurements for that generation of the Mercedes-Benz SL-Class.

Everything on the Mercedes-Benz SL-Class

Recalls59 campaigns Reliability4.0/5 Common problems320 complaints Check a VINAgainst this exact build Used prices789 listings What yours is worthValue by year & mileage Insurance costEstimated per year Window stickerOriginal Monroney label Decode a VINWhat each character means About this car1994–2026

Frequently asked questions

How long is a Mercedes-Benz SL-Class?

182.3″ (15′ 2″) in its current generation, 74″ wide and 51.2″ tall.

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

4,068 lb at the kerb.

Will a SL-Class fit in a garage?

At 15.2 feet it fits a standard 20-foot single garage with room to spare. A street parking space of 18 feet is comfortable.

Has the SL-Class got bigger over the years?

Yes — 3.5″ longer and -326 lb heavier since 2008, across 2 generations. Weight grew -7%, far faster than length.

Dimensions from NHTSA vPIC and Transport Canada vehicle records, manufacturer-declared — 2 generations of the Mercedes-Benz SL-Class. Metric values converted to inches and pounds, latest generation 182.3″ and 4,068 lb; generation ranges approximate. Fit verdicts computed by ForCar against typical US garage and parking dimensions. Last updated Sep 2026. — ForCar Reviewed by Denis Kataev, founder of ForCar.

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