Among 185 sedans and coupes with a similar-sized cabin, the average is 12.9 cu ft, so the IS sits below it.
What actually fits in a IS
| What you are loading | How many fit | Each item |
|---|---|---|
| Checked suitcases | 1 | 27 × 21 × 14″ — 4.6 cu ft |
| Carry-on cases | 5 | 22 × 14 × 9″ — 1.6 cu ft |
| Grocery bags | 8 | about 1 cu ft each |
| Golf bags | 1 | full set, about 5 cu ft |
| Folded stroller | Fits | about 6 cu ft |
Cabin or cargo — where the space went
| Space | Volume | Share of total |
|---|---|---|
| Passenger cabin | 90 cu ft | |
| Cargo area | 11 cu ft | |
| Total interior | 101 cu ft |
Against cars with a similar cabin
| Measure | This car | 185 sedans and coupes with a similar cabin | Difference |
|---|---|---|---|
| Cargo volume | 11 cu ft | 12.9 cu ft | -1.9 cu ft |
| In checked suitcases | 1 | 2 | -1 |
Cars with the same room
Against its closest rivals: the Toyota Corolla has 13 cu ft, the Acura TLX 14 cu ft and the Subaru WRX 12 cu ft, next to 11 cu ft for the IS. That makes the IS the tightest of the four.
| Car | Trunk volume | vs Lexus IS | Checked suitcases | Measured |
|---|---|---|---|---|
| Cadillac CT4 | 0 cu ft | 1 | 2026 | |
| Cadillac CT5 | 0 cu ft | 1 | 2026 | |
| BMW i5 | 0 cu ft | 1 | 2027 | |
| BMW M4 | 0 cu ft | 1 | 2020 | |
| Chevrolet Spark | 0 cu ft | 1 | 2022 | |
| BMW 530e | -1 cu ft | 1 | 2023 |
Trunk space is one number. Buying is a longer list.
- Check a VIN for recalls, complaints and its exact build
- Exact value for that car, adjusted for its mileage
- The original window sticker and factory options
- Full research report as a PDF you can hand to a mechanic
- No ads, on every page
- No ads, no tracking — and much more
Frequently asked questions
How much cargo space does the Lexus IS have?
11 cu ft in the trunk in the 2026 model, with 90 cu ft of passenger space. The average for 185 sedans and coupes with a similar cabin is 12.9 cu ft.
Does the IS have more cargo space than the Toyota Corolla?
No: 11 cu ft against 13 cu ft for the 2026 Toyota Corolla, about 2 cu ft less.
Has the IS's trunk got bigger over the years?
Not much overall: 11 cu ft in 2001 and 11 cu ft in 2026, within 2 cu ft in every year we hold.
Which cars have the same cargo room as the IS?
The closest by volume in the same body family are the Cadillac CT4 (11 cu ft), Cadillac CT5 (11 cu ft) and BMW i5 (11 cu ft), against 11 cu ft for the IS.
Mark ForCar as a preferred source and our data shows up first in your Google results. One click, no account.