Comparing like with like — the same EPA size class, 1980s against 2020s — so the shift towards SUVs doesn't distort the picture.
| Class | Era | Passenger | Boot |
|---|---|---|---|
| Midsize | 1980s | 97.5 | 15.7 |
| Midsize | 2020s | 99.8 | 13.5 |
| Compact | 1980s | 89.7 | 13.5 |
| Compact | 2020s | 91.8 | 11.9 |
Two inches gained inside, two cubic feet lost behind
A midsize car gained 2.3 cubic feet of passenger space over forty years and lost 2.2 of boot. A compact gained 2.1 and lost 1.6.
Over the same period those cars grew about four inches taller and four inches wider on the outside, and the average gained 336 kg.
So the exterior grew substantially, the cabin grew marginally, and the luggage space went backwards.
Where the volume went
Crash structure. Rear crumple zones, reinforced bulkheads and side-impact beams occupy space that used to be boot. This is the largest single reason and it bought something real.
Fuel tanks moved. Safety regulations pushed tanks forward, ahead of the rear axle, which eats into the boot floor.
Suspension takes more room. Multi-link rear setups ride better than the beam axles they replaced and intrude further into the load area.
Batteries and electronics. Hybrid packs, 12-volt batteries relocated for weight distribution, amplifiers and control modules all found homes under the boot floor.
Styling. The steeply raked rear screens and high beltlines of modern design cost usable height in the load bay, whatever the cubic figure says.
Sports cars took it worst
Two-seaters lost 30% of their boot volume — from 13.3 cubic feet in the 1980s to 9.3 in the 2020s — and their cabin shrank too, from 86.0 to 80.8. It's the only category where both numbers went down.
What to do about it
Measure, don't assume. A modern midsize saloon carries less than an equivalent from 1990. If the boot matters, check the published figure rather than trusting that newer means bigger.
The wagon is the answer nobody buys. It solves exactly this problem and is the cheapest body style on the used market at a $6,950 median — below sedans and $4,000 under SUVs.
Don't trust the class name. EPA classes are assigned by interior volume, which produces results like the Acura Integra counting as a large car.
Check the exact configuration. Boot volume varies within a model — hybrids lose space to the battery, and a spare wheel versus a repair kit changes the floor. A VIN check decodes what a specific car was built with.
Frequently asked questions
Did car boots get smaller?
Within the same EPA class, yes. Midsize car boots fell from 15.7 to 13.5 cubic feet between the 1980s and 2020s, and compacts from 13.5 to 11.9 — while passenger space gained only about two cubic feet.
Why did boot space shrink while cars got bigger?
Rear crumple zones and reinforced bulkheads, fuel tanks moved forward for safety, multi-link rear suspension intruding into the load bay, batteries and electronics under the floor, and steeply raked rear screens.
Which cars lost the most space?
Two-seaters, which lost 30% of boot volume — from 13.3 to 9.3 cubic feet — and are the only category where the cabin shrank too, from 86.0 to 80.8.
What should I buy if I need luggage space?
A wagon solves exactly this and is the cheapest body style on the used market at a $6,950 median, below sedans and $4,000 under SUVs. Otherwise check published boot figures rather than assuming newer means bigger.
Denis Kataev is a serial solopreneur and the founder of ForCar. With 15+ years in software engineering and 10 years in SEO, he builds data-driven products end to end — backed by a sharp eye for design. At ForCar he mines proprietary vehicle datasets, turning raw numbers into buying advice you can actually trust.
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