Quick answer
The 1991 Mercedes-Benz 420, the latest model year on record, is 208.3″ long, 71.7″ wide and 56.7″ tall on a 121.3″ wheelbase, and weighs 3,913 lb. At 17.4 ft it fits a standard garage but overhangs an 18-foot street space.
Every Mercedes-Benz 420 generation, measured
| Generation | Length | Width | Height | Wheelbase | Curb weight |
|---|---|---|---|---|---|
| 1986–1991 | 208.3″ | 71.7″ | 56.7″ | 121.3″ | 3,847 lb |
ROWS 1·SOURCE NHTSA vPIC / Transport Canada
420 year by year
| Model year | Length | Width | Wheelbase | Curb weight | Body styles |
|---|---|---|---|---|---|
| 1991 | 208.3″ | 71.7″ | 121.3″ | 1 | |
| 1990 | 208.3″ | 71.7″ | 121.3″ | 1 | |
| 1989 | 208.3″ | 71.7″ | 121.3″ | 1 | |
| 1988 | 208.3″ | 71.7″ | 121.3″ | 1 | |
| 1987 | 208.3″ | 71.7″ | 121.3″ | 1 | |
| 1986 | 208.3″ | 71.7″ | 121.3″ | 1 |
ROWS 6·SOURCE Transport Canada vehicle specifications
Will a 420 fit
| Space | Typical size | This car | Verdict |
|---|---|---|---|
| Single garage | 20 ft deep | 17.4 ft | Fits, with room to open the door |
| Street parking space | 18 ft | 17.4 ft | Overhangs — expect a tight squeeze |
| Standard parking bay width | 8.5 ft wide | 6 ft | Room to open doors both sides |
ROWS 3·SOURCE ForCar, computed from vehicle dimensions
Against cars of the same length
Among the 419 cars within 10″ of its length, the 420 is narrower than 87%.
| Measure | This car | Typical of 419 cars within 10″ of its length | Difference |
|---|---|---|---|
| Width | 71.7″ | 76″ | −4.3″ |
| Wheelbase | 121.3″ | 119.7″ | +1.6″ |
| Curb weight | 3,913 lb | 4,453 lb | −540 lb |
ROWS 3·SOURCE ForCar, computed across vehicles of similar length
420 against its rivals
Next to the Ford LTD, Dodge DIPLOMAT and Chrysler FIFTH AVENUE, the 420 is the narrowest of the four.
| Model | Model year | Length | Width | Curb weight |
|---|---|---|---|---|
| Mercedes-Benz 420 (this car) | 1991 | 208.3″ | 71.7″ | 3,913 lb |
| Ford LTD | 1992 | 215.7″ | 79.1″ | 3,986 lb |
| Dodge DIPLOMAT | 1989 | 204.7″ | 72.4″ | 3,580 lb |
| Chrysler FIFTH AVENUE | 1989 | 206.7″ | 72.4″ | 3,770 lb |
ROWS 4·SOURCE NHTSA vPIC / Transport Canada; rivals: same EPA class and body, most searched
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Frequently asked questions
Is the 1991 420 bigger than the 1990?
No. The 1991 and 1990 420 are the same size and weight.
Which is bigger, the 420 or the Ford LTD?
The 1992 Ford LTD is 7.4″ longer and 73 lb heavier than the 1991 420.
Dimensions from NHTSA vPIC and Transport Canada vehicle records, manufacturer-declared for 6 420 model years, 1986 to 1991. Metric values converted to inches and pounds; generation boundaries are estimated from changes in size (how we measure). Last updated Nov 2026. — ForCar Reviewed by Denis Kataev, founder of ForCar.
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