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Infiniti Q45 Trunk Space

The 2006 Infiniti Q45 has 14 cu ft of trunk space: room for 2 checked suitcases or 7 carry-ons.

EPA interior volume · 14 cu ft trunk · 107 cu ft cabin · measured 2006 · Updated Nov 4, 2026
Quick answer

Among 171 sedans and coupes with a similar-sized cabin, the average is 15.1 cu ft, so the Q45 sits below it.

What actually fits in a Q45

The biggest single change came in 1997: −2 cu ft against the 1996 car.

FIG.01·Infiniti Q45 — 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·Infiniti Q45 — cabin versus cargo
SpaceVolumeShare of total
Passenger cabin107 cu ft88.4%
Cargo area14 cu ft11.6%
Total interior121 cu ft100%
ROWS 3·SOURCE EPA interior volume

Against cars with a similar cabin

FIG.03·Infiniti Q45 against similar cars
MeasureThis car171 sedans and coupes with a similar cabinDifference
Cargo volume14 cu ft15.1 cu ft-1.1 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 Buick Century has 17 cu ft, the Cadillac Seville 15 cu ft and the Lincoln Zephyr 16 cu ft, next to 14 cu ft for the Q45. That makes the Q45 the tightest of the four.

FIG.04·Infiniti Q45 — cars with the same cargo room
CarTrunk volumevs Infiniti Q45Checked suitcasesMeasured
BMW 525i14 cu ft0 cu ft22007
BMW 525xi14 cu ft0 cu ft22007
BMW 528xi14 cu ft0 cu ft22008
BMW 530xi14 cu ft0 cu ft22007
BMW 535xi14 cu ft0 cu ft22008
BMW 545i14 cu ft0 cu ft22005
ROWS 6·SOURCE EPA interior volume + ForCar
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Everything on the Infiniti Q45
Recalls25 campaignsFuel economy18 mpg bestReliability3.5/5Common problems259 complaintsCheck a VINAgainst this exact buildDimensionsSize, weight, generationsWindow stickerOriginal Monroney labelDecode a VINWhat each character meansAbout this car1990–2007

Frequently asked questions

How much cargo space does the Infiniti Q45 have?

14 cu ft in the trunk in the 2006 model, with 107 cu ft of passenger space. The average for 171 sedans and coupes with a similar cabin is 15.1 cu ft.

Does the Q45 have more cargo space than the Buick Century?

No: 14 cu ft against 17 cu ft for the 2005 Buick Century, about 3 cu ft less.

Has the Q45's trunk got bigger over the years?

Not much overall: 15 cu ft in 1990 and 14 cu ft in 2006, though it ranged from 13 to 15 cu ft in between.

Which cars have the same cargo room as the Q45?

The closest by volume in the same body family are the BMW 525i (14 cu ft), BMW 525xi (14 cu ft) and BMW 528xi (14 cu ft), against 14 cu ft for the Q45.

Cargo and passenger volumes from EPA interior-volume records, measured 2006 for the Infiniti Q45, 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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