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, and it is the number that decides fuel use, tyre wear and how far the car takes to stop.
| 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 |
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. Small moves inside a generation are facelifts; the jumps are new platforms.
| Model year | Length | Width | Wheelbase | Curb weight | Body styles |
|---|---|---|---|---|---|
| 2021 | 182.3″ | 74″ | 102″ | 2 | |
| 2020 | 182.3″ | 74″ | 102″ | 2 | |
| 2019 | 182.3″ | 74″ | 102″ | 3 | |
| 2018 | 182.7″ | 74″ | 102″ | 4 | |
| 2017 | 182.7″ | 74″ | 102″ | 4 | |
| 2016 | 182.3″ | 74″ | 101.6″ | 3 | |
| 2015 | 182.3″ | 74″ | 101.6″ | 3 | |
| 2014 | 182.3″ | 74″ | 101.6″ | 3 | |
| 2013 | 182.3″ | 74″ | 101.6″ | 3 | |
| 2012 | 180.7″ | 71.7″ | 100.8″ | 2 | |
| 2011 | 180.7″ | 71.7″ | 100.8″ | 4 | |
| 2010 | 180.7″ | 71.7″ | 100.8″ | 4 | |
| 2009 | 180.7″ | 71.7″ | 100.8″ | 4 | |
| 2008 | 178.7″ | 72″ | 100.8″ | 4 |
Will a SL-Class fit
The practical question behind every dimensions search. A single-car garage in the US is typically 20 feet deep; a street parking space is about 18. We allow a foot of clearance in both — nobody parks to the millimetre.
| 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 |
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.
| 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 |
A longer wheelbase for the same overall length means shorter overhangs — usually more cabin space and a steadier ride. Lighter than typical for its size generally means better fuel economy and shorter stopping distances.
Specs vary by trim. Yours decodes from the VIN.
- Exact build, engine and factory options for one VIN
- The original window sticker as it left the factory
- What that specific configuration is worth today
- Decode a whole list of VINs at once
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- No ads, no tracking — and much more
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.
One row per generation, not per model year: manufacturers rarely change the body between facelifts, and a table of forty near-identical rows helps nobody. Where a generation offered several body styles, the figures are the base measurements for that generation.
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.