Cadillac models average 16.9 cu ft of boot — roughly 2 checked suitcases. The roomiest holds 30 cu ft, the tightest 10, across 21 measurements.
What actually fits
A translation from cubic feet into luggage, on Cadillac's own models, so the numbers below mean something.
| Model | Boot volume | Checked cases | Carry-ons | Pushchair | Measured |
|---|---|---|---|---|---|
| Cadillac SRX | 5 | 15 | yes | 2016 | |
| Cadillac Optiq | 4 | 13 | yes | 2026 | |
| Cadillac Lyriq | 4 | 12 | yes | 2026 | |
| Cadillac XT4 | 4 | 11 | yes | 2025 | |
| Cadillac Fleetwood | 3 | 10 | yes | 1996 | |
| Cadillac Brougham | 3 | 9 | yes | 1992 | |
| Cadillac Deville | 3 | 9 | yes | 2005 | |
| Cadillac DTS | 3 | 9 | yes | 2011 |
Across Cadillac the boot averages 16.9 cu ft, against 15.4 cu ft for every car we measure.
Cadillac models by cargo space
From the roomiest down — 21 models with a measured boot.
| Model | Cargo | Checked suitcases | Cabin |
|---|---|---|---|
| Cadillac SRX | cu ft | 5 | 101 cu ft |
| Cadillac Optiq | cu ft | 4 | 102 cu ft |
| Cadillac Lyriq | cu ft | 4 | 105 cu ft |
| Cadillac XT4 | cu ft | 4 | 101 cu ft |
| Cadillac Fleetwood | cu ft | 3 | 125 cu ft |
| Cadillac Brougham | cu ft | 3 | 111 cu ft |
| Cadillac Deville | cu ft | 3 | 117 cu ft |
| Cadillac DTS | cu ft | 3 | 113 cu ft |
| Cadillac XTS | cu ft | 3 | 104 cu ft |
| Cadillac CT6 | cu ft | 2 | 110 cu ft |
| Cadillac Eldorado | cu ft | 2 | 100 cu ft |
| Cadillac Seville | cu ft | 2 | 106 cu ft |
| Cadillac Catera | cu ft | 2 | 99 cu ft |
| Cadillac Celestiq | cu ft | 2 | 107 cu ft |
| Cadillac STS | cu ft | 2 | 104 cu ft |
| Cadillac Cimarron | cu ft | 2 | 89 cu ft |
| Cadillac CTS | cu ft | 2 | 100 cu ft |
| Cadillac CT4 | cu ft | 1 | 90 cu ft |
| Cadillac CT5 | cu ft | 1 | 99 cu ft |
| Cadillac ELR | cu ft | 1 | 83 cu ft |
| Cadillac ATS | cu ft | 1 | 96 cu ft |
Boot space is one number. Buying is a longer list.
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How we count
Cargo and passenger volumes come from EPA interior-volume records — the same figures manufacturers file for the window sticker, measured to a standard method rather than claimed in a brochure.
The luggage counts are ours — computed for all 21 Cadillac models below. We assume 80% usable volume, because a boot is not a cube: wheel arches, a sloping tailgate and the shape of the cases themselves waste the rest, so the 16.9 cu ft Cadillac averages becomes 13.5 cu ft you can actually pack. Suitcase sizes are the airline standards — 22 × 14 × 9″ for carry-on, 27 × 21 × 14″ for checked, and the roomiest Cadillac here swallows 5 checked cases. Numbers are deliberately conservative; if we say four cases fit, four cases fit.
Frequently asked questions
Which Cadillac has the most cargo space?
The roomiest holds — cu ft. The table above sorts every Cadillac model from the largest boot down.
What is the average Cadillac cargo space?
— cu ft across 21 models — about 2 checked suitcases.
Where do these figures come from?
EPA interior-volume records — standardised measurements filed by manufacturers, not marketing claims.
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