EVs have more space, and here's why.

From the outside, electric vehicles may appear to be small toys in comparison to larger gas-powered vehicles. Although some may appear small on the outside and may fit better in smaller parking spaces, don't be fooled by their size: EVs actually pack the most space into the least amount of space.That's because EVs have more space than gas-powered counterparts because they have fewer moving parts. Furthermore, advances in design and technology make many parts of the vehicle smaller overall, giving EVs more space for passengers and cargo.
The Complete Idiot's Guide to Electric Vehicles

More Space = No Engine

Engines, gas tanks, multi-speed gearboxes, exhaust systems, catalytic converters, and other large parts have always been included in gas-powered vehicles.
EVs, on the other hand, do not require all of those large parts.
They don't need an exhaust system or a catalytic converter because they don't burn fuel.
A grille is unnecessary in an EV because there is no radiator.
Electric vehicle motors have only one speed, eliminating the need for a transmission or gearbox.
Smaller components such as spark plugs, a timing belt, and fuel injectors are also missing.
The fact that EVs use a small electric motor and a rechargeable battery to power the vehicle rather than a large engine is the most important key to a spacious interior. That means the overall design of the EV can be altered not only to improve performance but also to provide significantly more space for both the driver and passengers.
All parts of the cabin can be expanded because the large gas-powered engine takes up so much space under the hood. This means that front seats in an EV can be set further forward than in a gas car. Rear seat passengers can stretch out with more legroom as they move up.

Where is the 'Hump' on the Interior Floor?

The platform is exposed and the seating is removed in this rendering of the 2022 Ford F150 EV.
With EVs, the extra interior space advantage only grows. The central floor tunnel hump seen in gas cars can be removed in EVs because it does not require a transmission, differential, or exhaust system.
Many EVs do not have it, but some use a smaller version of it to house batteries, storage compartments, or other features.
When that tunnel is removed, however, the interior of an EV appears to have more space. Rear passengers, for example, do not need to raise their knees to fit into the back seat, and everyday items such as grocery bags or backpacks can fit more easily into the back floor area.

Full-size Interior in a Mid-Size Body: Impact of the Skateboard Effect on EV Space

VW's'skateboard' platform.
VW's'skateboard' platform. Sean Gallup/Getty Images
Another reason EVs are more spacious than gas cars is their clever design. VW, Ford, and other EV manufacturers use a skateboard system. Because of the location of an EV's wheels, this system provides an advantage in terms of space.
Consider a gasoline car to be a pair of skates, and an electric vehicle to be a skateboard. The wheels on a pair of skates are placed fairly close together beneath the body of the skate. There is very little space between the front and rear wheels; everything is crammed in between them.
The wheels on a skateboard, on the other hand, are spaced much further apart beneath the skateboard platform. EVs still place everything between the wheels, just like a gas car, but the wheel spacing design difference allows for a lot more interior space.
A comparison of a gas car and an EV, demonstrating the increased interior and trunk space of an EV.
Batteries, brakes, motors, and other vital parts are typically distributed along the'skateboard' platform, leaving a flat base for the EV's exterior framework and interior design. Aside from increased interior space, the skateboard approach gives EVs a lower center of gravity than gas cars, improving overall vehicle handling.
When you consider that EVs require far fewer parts than gas cars, you can quickly see how interior space expands. Because of this skateboard design approach, EV manufacturers can place vital parts wherever they want on the car's base platform and arrange seating and storage spaces however they want.
In contrast, gasoline-powered vehicles place the engine and steering systems on top of the flat base, as well as all other parts above the base. Everything else goes above the flat base of a gas car, further limiting interior space.
EV automakers continue to improve on the skateboard design, with each new version focusing on increasing comfort for the driver and passengers.
For example, Ree, an Israeli EV automaker, offers a design that allows buyers to build a customized EV using a modular approach, similar to how you can build modular homes by assembling prebuilt parts in various designs.
In the video, you can see how Ree's EV's'skateboard' designed platform has everything it needs to power the vehicle while also providing a flat base for any type of interior design desired.
Other electric vehicle manufacturers use the skateboard approach as a reusable base for multiple types of EV bodies, which improves production times and lowers manufacturing costs.

Pack More Stuff With EV Increased Cargo Capacity Using the Double Trunk Trick

A large bicycle in the trunk of a Nissan Leaf 2022.
Because the skateboard design incorporates moving parts into the base platform, there is more space for storage in the front under the hood where the engine used to be.
To make the most of the available space, EV manufacturers frequently design a front trunk (also known as a 'frunk'). Because an EV usually has a back trunk, many EVs have a double trunk for storage.
The 2022 Nissan Leaf, for example, has 23.6 cubic feet of space; 30 if you include the flexible back seat area. Inside larger trunks, there are emergency latches, many of which can be opened wirelessly.
Some front trunks have dividers to keep items from shifting around; aftermarket cargo netting or bungee belts can also be added to help keep items securely in place.
A typical electric SUV with about 30 square feet of storage (without the back seats folded down) can easily fit two carry-on bags, two large checked-baggage sized suitcases, and one soft-sided overnight bag or backpack.
Even with all that luggage, the rear windows are usually not blocked, leaving plenty of interior space for family members to enjoy the road trip.
Newer EVs, such as the Mustang Mach-e, include a feature for drivers who enjoy tailgate or "frunkgate" parties. The Mach-frunk e's has a drain hole, so owners can fill it with ice to keep drinks or food cold and drain melted ice out the bottom.
Een a small hatchback EV can provide plenty of storage space. A Christmas tree or even a bicycle can fit nicely in a compact EV with the seats folded down.
The front truck is also referred to as the front luggage compartment. In Europe and the United Kingdom, where the trunk is referred to as the 'boot,' the storage space may be referred to as the front boot or froot.