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Kia K4 Trunk Space

The 2026 Kia K4 has 22 cu ft of trunk space: room for 3 checked suitcases or 11 carry-ons.

EPA interior volume · 22 cu ft trunk · 99 cu ft cabin · measured 2026 · Updated Nov 4, 2026
Quick answer

Among 229 sedans and coupes with a similar-sized cabin, the average is 14.4 cu ft, so the K4 carries more than 95% of them.

What actually fits in a K4

FIG.01·Kia K4 — what fits in the trunk
What you are loadingHow many fitEach item
Checked suitcases327 × 21 × 14″ — 4.6 cu ft
Carry-on cases1122 × 14 × 9″ — 1.6 cu ft
Grocery bags17about 1 cu ft each
Golf bags3full 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·Kia K4 — cabin versus cargo
SpaceVolumeShare of total
Passenger cabin99 cu ft81.8%
Cargo area22 cu ft18.2%
Total interior121 cu ft100%
ROWS 3·SOURCE EPA interior volume

Against cars with a similar cabin

FIG.03·Kia K4 against similar cars
MeasureThis car229 sedans and coupes with a similar cabinDifference
Cargo volume22 cu ft14.4 cu ft+7.6 cu ft
In checked suitcases32+1
ROWS 2·SOURCE ForCar, computed across cars of similar cabin size

Cars with the same room

Against its closest rivals: the Honda Accord has 17 cu ft, the Dodge Challenger 16 cu ft and the Tesla Model 3 15 cu ft, next to 22 cu ft for the K4. That makes the K4 the roomiest of the four.

FIG.04·Kia K4 — cars with the same cargo room
CarTrunk volumevs Kia K4Checked suitcasesMeasured
Audi S522 cu ft0 cu ft32026
Audi A523 cu ft+1 cu ft42026
Kia Stinger23 cu ft+1 cu ft42023
Acura Integra24 cu ft+2 cu ft42026
Nissan Leaf20 cu ft-2 cu ft32026
Hyundai Veloster20 cu ft-2 cu ft32021
ROWS 6·SOURCE EPA interior volume + ForCar
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Everything on the Kia K4
Recalls4 campaignsFuel economy34 mpg bestReliability4.0/5Common problems47 complaintsCheck a VINAgainst this exact buildUsed prices187 listingsWindow stickerOriginal Monroney labelDecode a VINWhat each character meansAbout this car2025–2026

Frequently asked questions

How much cargo space does the Kia K4 have?

22 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 K4 have more cargo space than the Honda Accord?

Yes: 22 cu ft against 17 cu ft for the 2026 Honda Accord, about 5 cu ft more.

Which cars have the same cargo room as the K4?

The closest by volume in the same body family are the Audi S5 (22 cu ft), Audi A5 (23 cu ft) and Kia Stinger (23 cu ft), against 22 cu ft for the K4.

Cargo and passenger volumes from EPA interior-volume records, measured 2026 for the Kia K4, 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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