The current Cadillac STS is 196.5″ long, 72.4″ wide, on a 116.1″ wheelbase, weighing 3,858 lb. At 16.4 feet it fits a standard garage and fits a street parking space.
Every Cadillac STS generation, measured
One row per generation. Watch the weight column — that is where most of the change happens for the Cadillac STS, 0 lb of it since 2005, 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 |
|---|---|---|---|---|---|
| 2005–2011 | 196.5″ | 72.4″ | 57.5″ | 116.1″ | 3,858 lb |
STS year by year
Measured every model year, not just at generation changes — 7 years on record for the Cadillac STS. Small moves inside a generation are facelifts; the jumps are the 1 new platforms below.
| Model year | Length | Width | Wheelbase | Curb weight | Body styles |
|---|---|---|---|---|---|
| 2011 | 196.5″ | 72.4″ | 116.1″ | 2 | |
| 2010 | 196.5″ | 72.4″ | 116.1″ | 2 | |
| 2009 | 197.2″ | 72.4″ | 116.5″ | 2 | |
| 2008 | 197.2″ | 72.4″ | 116.5″ | 2 | |
| 2007 | 197.2″ | 72.4″ | 116.5″ | 2 | |
| 2006 | 197.2″ | 72.4″ | 116.5″ | 2 | |
| 2005 | 196.5″ | 72.4″ | 116.1″ | 1 |
Will a STS fit
The practical question behind every dimensions search, and for a 16.4-foot Cadillac STS 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 STS clears the garage by 2.6 ft. We allow a foot of clearance in both — nobody parks to the millimetre.
| Space | Typical size | This car | Verdict |
|---|---|---|---|
| Single garage | 20 ft deep | 16.4 ft | Fits, with room to open the door |
| Street parking space | 18 ft | 16.4 ft | Fits comfortably |
| Standard parking bay width | 8.5 ft wide | 6 ft | Room to open doors both sides |
Against cars of the same length
Compared with 818 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 | 72.4″ | 74″ | -1.6″ |
| Wheelbase | 116.1″ | 113.4″ | +2.7″ |
| Curb weight | 3,858 lb | 4,096 lb | -238 lb |
A longer wheelbase for the same overall length means shorter overhangs — usually more cabin space and a steadier ride. At 3,858 lb the Cadillac STS is 238 lb lighter 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, 7 measured model years for the Cadillac STS between 2005 and 2011.
One row per generation, not per model year: manufacturers rarely change the body between facelifts, and the Cadillac STS fits into 1 rows instead of 7. Where a generation offered several body styles, the figures are the base measurements for that generation of the Cadillac STS.
Frequently asked questions
How long is a Cadillac STS?
196.5″ (16′ 4″) in its current generation, 72.4″ wide and 57.5″ tall.
How much does a Cadillac STS weigh?
3,858 lb at the kerb.
Will a STS fit in a garage?
At 16.4 feet it fits a standard 20-foot single garage with room to spare. A street parking space of 18 feet is comfortable.
Has the STS got bigger over the years?
Not materially, by the generations we hold.
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