Ever parked next to a car of similar dimensions and noticed its interior feels... roomier? The exterior footprint looks ordinary, but inside there's unexpected legroom, a flat floor, and space where you didn't expect it.
That's not an illusion. It's packaging — the art of deciding where a car's mechanical parts go. And electric cars have completely rewritten the rules of packaging, giving designers a freedom that petrol cars never had.
Here's where the space comes from, what it means in practice, and why some EVs exploit it better than others.
1. The space problem petrol cars can't escape
A petrol car carries a lot of machinery that passengers never see — and never use:
A large engine bay up front, housing the engine, gearbox, radiators, exhaust and ancillaries.
A transmission tunnel running down the middle of the floor, carrying the driveshaft to the rear wheels.
A fuel tank and exhaust system underneath the rear.
All of that hardware claims space that could otherwise be passenger room or luggage space. The engine bay forces a long nose. The transmission tunnel forces a hump down the middle of the back seat. The designers work around these fixed points — but they can't remove them.
2. The EV packaging advantage: freedom from fixed points
Electric cars have a fundamentally different layout, and it shows up in four ways:
No big engine bay. With no engine and gearbox up front, the nose can be dramatically shorter. The car's length is freed up for the cabin rather than a bonnet full of machinery.
A flat floor. No driveshaft means no transmission tunnel. The rear floor can be completely flat — which means a genuinely comfortable middle seat and easier access across the cabin.
The battery works with you, not against you. The heaviest component sits flat under the floor, out of the way. Unlike a fuel tank or engine, it doesn't carve awkward shapes out of the cabin or boot.
Wheels pushed to the corners. With no engine dictating the front layout, wheels can move further towards the corners. That maximises the wheelbase — and wheelbase, more than overall length, is what creates interior space.
Together, these changes mean an EV can offer the interior of a larger car within the footprint of a smaller one.
3. What it means in practice
More rear legroom. Freed from the engine and tunnel constraints, rear-seat space grows noticeably — especially important for anyone choosing a family electric car.
A usable middle seat. A flat floor means three-across seating that's actually comfortable, not a penalty seat.
More flexible storage. Without a transmission tunnel and fuel tank eating into the load area, boot space can be deeper, wider and more usable.
Smaller footprint, same room. City drivers get a car that's easy to park, with interior space that belies the exterior dimensions.
This is why two cars of identical external size can feel completely different inside — and why electric cars consistently punch above their footprint.
4. The honest trade-offs
Packaging freedom is a real advantage, but it's not automatic — and it has its own compromises.
Not every electric car model uses the freedom well. Some still carry long, unnecessary noses or compromised rear seats. Packaging is a design choice, not a physics guarantee.
The battery still needs space. A large battery pack under the floor can push the rear seat higher — reducing headroom or foot clearance for taller passengers. Good EV design manages this; lazy design doesn't.
Heavier doesn't mean roomier. Some EVs are heavy because of the battery, not because of generous interiors. Space comes from smart layout, not from weight.
The difference between a roomy EV and a cramped one isn't the badge — it's how well the platform's freedom was used.
5. XPENG: putting the packaging freedom to work
This is where XPENG's approach to space becomes visible.
The X9 is a large people-mover built around the EV layout — a flat floor, a wheelbase pushed to the corners, and flexible seating that adapts to families, passengers or cargo. For large families considering electric cars in Australia, that flexibility is often the deciding factor.
The NEW G6 electric SUV, meanwhile, is a mid-size model with interior space that takes advantage of the same packaging principles — rear legroom and a practical boot that make it feel larger than its footprint suggests.
Both cars are examples of the same philosophy. The EV layout isn't just about electric driving — it's about giving people back the space that combustion cars spent a century taking away.
Conclusion
The biggest visual difference between a petrol car and an EV isn't always obvious from the outside. It's on the inside — legroom from a shorter nose, a flat floor from no driveshaft, and a boot that isn't fighting a fuel tank.
Electric cars feel bigger inside because they were designed to be. That packaging works the way it should — and it's one of the quietest, most useful revolutions in modern motoring.
Ready to feel how much room an EV can have? Book a test drive with XPENG — one of Australia's leading Chinese EV brands — and experience the X9 or NEW G6. Measure the space for yourself.
Note: Interior space varies by model and specification.
