The Buick Riviera has 18 cu ft of cargo space. In practice that is 3 checked suitcases, or 9 carry-ons, or about 14 supermarket bags. A folded pushchair fits. Against 57 cars with a similar-sized cabin it sits below the average of 22.4 cu ft.
What actually fits in a Riviera
Cubic feet are an abstraction — 18 cu ft means nothing until you load it. Here is the same number in things people actually load, 3 checked cases or 9 carry-ons for the Buick Riviera, with a packing allowance — a boot is not a cube, and corners go to waste.
| What you are loading | How many fit | Each item |
|---|---|---|
| Checked suitcases | 3 | 27 × 21 × 14″ — 4.6 cu ft |
| Carry-on cases | 9 | 22 × 14 × 9″ — 1.6 cu ft |
| Supermarket bags | 14 | about 1 cu ft each |
| Golf bags | 2 | full set, about 5 cu ft |
| Folded pushchair | Fits | about 6 cu ft |
Counts assume 80% usable volume: luggage does not tessellate, and a wheel arch eats the rest.
Cabin or boot — where the space went
Every car is a fixed envelope, and designers decide how to split it between people and things — the Buick Riviera gives 15.3% of its 118 cu ft to luggage. The share below is the honest way to compare an estate with a coupé of the same footprint, and among 57 cars with a cabin within eight cubic feet of the Buick Riviera the boot averages 22.4 cu ft.
| Space | Volume | Share of total |
|---|---|---|
| Passenger cabin | 100 cu ft | |
| Cargo area | 18 cu ft | |
| Total interior | 118 cu ft |
A typical split for a family car: room for people first, luggage second.
Against cars with a similar cabin
Compared with 57 models whose passenger space is within eight cubic feet — a fairer group than marketing classes, which put an estate and a coupé in the same bracket.
| Measure | This car | Similar cars | Difference |
|---|---|---|---|
| Cargo volume | 18 cu ft | 22.4 cu ft | -4.4 cu ft |
| In checked suitcases | 3 | 3 | +0 |
Cars with the same room
Closest matches by load volume with the seats folded — useful when the boot is the deciding factor and the badge is not. The Buick Riviera sits at 18 cu ft, so these are the cars that carry the same load.
| Car | Load volume | vs Buick Riviera | Checked suitcases | Measured |
|---|---|---|---|---|
| Ford Probe | +1 cu ft | 3 | 1997 | |
| Mazda 323 | -2 cu ft | 2 | 1995 | |
| Mazda Protege | +2 cu ft | 3 | 2003 | |
| Kia Sephia | -4 cu ft | 2 | 2001 | |
| Saab 900 | +6 cu ft | 4 | 1997 | |
| Saab 9000 | +6 cu ft | 4 | 1998 |
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 — 3 checked cases for the Buick Riviera come out of its 18 cu ft. 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, which is why the Buick Riviera counts as 14.4 cu ft of usable space rather than 18. Suitcase sizes are the airline standards — 22 × 14 × 9″ for carry-on, 27 × 21 × 14″ for checked, so the Buick Riviera takes 9 of the small ones. Numbers are deliberately conservative; if we say four cases fit, four cases fit.
Frequently asked questions
How much cargo space does the Buick Riviera have?
18 cu ft behind the rear seats, plus 100 cu ft of passenger cabin.
How many suitcases fit in a Riviera?
About 3 checked cases (27 × 21 × 14″) or 9 carry-ons, allowing for the fact that a boot is not a perfect cube.
Will a pushchair fit in a Riviera?
Yes — a folded pushchair takes roughly 6 cu ft and this car has 18, so it fits with room for shopping.
Is that a lot for this size of car?
Compared with 57 cars of a similar cabin size, it is below the average of 22.4 cu ft.
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