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Cadillac CT5 Trunk Space

The 2026 Cadillac CT5 has 11 cu ft of trunk space: room for 1 checked suitcase or 5 carry-ons.

EPA interior volume · 11 cu ft trunk · 99 cu ft cabin · measured 2026 · Updated Nov 3, 2026
Quick answer

Among 229 sedans and coupes with a similar-sized cabin, the average is 14.4 cu ft, so the CT5 carries less than 88% of them. It gives 10% of its interior to luggage, one of the smallest shares we measure.

What actually fits in a CT5

The trunk shrank from 13 cu ft in 2020 to 11 cu ft in 2026. The biggest single change came in 2022: −2 cu ft against the 2021 car.

FIG.01·Cadillac CT5 — what fits in the trunk
What you are loadingHow many fitEach item
Checked suitcases127 × 21 × 14″ — 4.6 cu ft
Carry-on cases522 × 14 × 9″ — 1.6 cu ft
Grocery bags8about 1 cu ft each
Golf bags1full 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 CT5 — cabin versus cargo
SpaceVolumeShare of total
Passenger cabin99 cu ft90%
Cargo area11 cu ft10%
Total interior110 cu ft100%
ROWS 3·SOURCE EPA interior volume

Against cars with a similar cabin

FIG.03·Cadillac CT5 against similar cars
MeasureThis car229 sedans and coupes with a similar cabinDifference
Cargo volume11 cu ft14.4 cu ft-3.4 cu ft
In checked suitcases12-1
ROWS 2·SOURCE ForCar, computed across cars of similar cabin size

Cars with the same room

Against its closest rivals: the Dodge Challenger has 16 cu ft, the Tesla Model 3 15 cu ft and the BMW M5 27 cu ft, next to 11 cu ft for the CT5. That makes the CT5 the tightest of the four.

FIG.04·Cadillac CT5 — cars with the same cargo room
CarTrunk volumevs Cadillac CT5Checked suitcasesMeasured
Cadillac CT411 cu ft0 cu ft12026
Audi e-tron GT11 cu ft0 cu ft12024
BMW i511 cu ft0 cu ft12027
Hyundai Ioniq 611 cu ft0 cu ft12025
Lexus IS11 cu ft0 cu ft12026
BMW M411 cu ft0 cu ft12020
ROWS 6·SOURCE EPA interior volume + ForCar
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Everything on the Cadillac CT5
Recalls24 campaignsFuel economy27 mpg bestReliability4.0/5Common problems103 complaintsCheck a VINAgainst this exact buildDimensionsSize, weight, generationsUsed prices81 listingsWhat yours is worthValue by year & mileageInsurance costEstimated per yearWindow stickerOriginal Monroney labelDecode a VINWhat each character meansAbout this car2020–2026

Frequently asked questions

How much cargo space does the Cadillac CT5 have?

11 cu ft in the trunk in the 2026 model, with 99 cu ft of passenger space. The average for 229 sedans and coupes with a similar cabin is 14.4 cu ft.

Does the CT5 have more cargo space than the Dodge Challenger?

No: 11 cu ft against 16 cu ft for the 2023 Dodge Challenger, about 5 cu ft less.

Has the CT5's trunk got bigger over the years?

No, it shrank: from 13 cu ft in 2020 to 11 cu ft in 2026.

Which cars have the same cargo room as the CT5?

The closest by volume in the same body family are the Cadillac CT4 (11 cu ft), Audi e-tron GT (11 cu ft) and BMW i5 (11 cu ft), against 11 cu ft for the CT5.

Cargo and passenger volumes from EPA interior-volume records, measured 2026 for the Cadillac CT5, 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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