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Cadillac STS Trunk Space

The 2011 Cadillac STS has 14 cu ft of trunk space: room for 2 checked suitcases or 7 carry-ons.

EPA interior volume · 14 cu ft trunk · 104 cu ft cabin · measured 2011 · Updated Nov 4, 2026
Quick answer

Among 197 sedans and coupes with a similar-sized cabin, the average is 15 cu ft, so the STS sits below it.

What actually fits in a STS

FIG.01·Cadillac STS — what fits in the trunk
What you are loadingHow many fitEach item
Checked suitcases227 × 21 × 14″ — 4.6 cu ft
Carry-on cases722 × 14 × 9″ — 1.6 cu ft
Grocery bags11about 1 cu ft each
Golf bags2full set, about 5 cu ft
Folded strollerFitsabout 6 cu ft
ROWS 5·SOURCE ForCar, computed from EPA cargo volume

Cabin or cargo — where the space went

FIG.02·Cadillac STS — cabin versus cargo
SpaceVolumeShare of total
Passenger cabin104 cu ft88.1%
Cargo area14 cu ft11.9%
Total interior118 cu ft100%
ROWS 3·SOURCE EPA interior volume

Against cars with a similar cabin

FIG.03·Cadillac STS against similar cars
MeasureThis car197 sedans and coupes with a similar cabinDifference
Cargo volume14 cu ft15 cu ft-1.0 cu ft
In checked suitcases22+0
ROWS 2·SOURCE ForCar, computed across cars of similar cabin size

Cars with the same room

Against its closest rivals: the Acura TL has 13 cu ft, the Dodge Avenger 13 cu ft and the Jaguar S-Type 12 cu ft, next to 14 cu ft for the STS. That makes the STS the roomiest of the four.

FIG.04·Cadillac STS — cars with the same cargo room
CarTrunk volumevs Cadillac STSChecked suitcasesMeasured
BMW 525i14 cu ft0 cu ft22007
BMW 525xi14 cu ft0 cu ft22007
BMW 528i14 cu ft0 cu ft22016
BMW 528xi14 cu ft0 cu ft22008
BMW 530xi14 cu ft0 cu ft22007
BMW 535d14 cu ft0 cu ft22016
ROWS 6·SOURCE EPA interior volume + ForCar
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Everything on the Cadillac STS
Recalls14 campaignsFuel economy21 mpg bestReliability3.5/5Common problems371 complaintsCheck a VINAgainst this exact buildDimensionsSize, weight, generationsUsed prices137 listingsWhat yours is worthValue by year & mileageInsurance costEstimated per yearWindow stickerOriginal Monroney labelDecode a VINWhat each character meansAbout this car2005–2011

Frequently asked questions

How much cargo space does the Cadillac STS have?

14 cu ft in the trunk in the 2011 model, with 104 cu ft of passenger space. The average for 197 sedans and coupes with a similar cabin is 15 cu ft.

Does the STS have more cargo space than the Acura TL?

Yes: 14 cu ft against 13 cu ft for the 2014 Acura TL, about 1 cu ft more.

Has the STS's trunk got bigger over the years?

Not much overall: 13 cu ft in 2005 and 14 cu ft in 2011, within 2 cu ft in every year we hold.

Which cars have the same cargo room as the STS?

The closest by volume in the same body family are the BMW 525i (14 cu ft), BMW 525xi (14 cu ft) and BMW 528i (14 cu ft), against 14 cu ft for the STS.

Cargo and passenger volumes from EPA interior-volume records, measured 2011 for the Cadillac STS, seats up. Luggage capacity computed by ForCar at 80% usable volume against airline-standard case sizes (how we count). Last updated Nov 2026. — ForCar Reviewed by , founder of ForCar.
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