Comparison

BYD Atto 3 vs Sealion 7

The BYD Atto 3 and Sealion 7 are both BYD electric SUVs, and the Sealion 7 is the larger and more expensive of the two. In Australia, the Atto 3 Evo Premium costs $46,990 before on-road costs and the Sealion 7 Premium $54,990, yet the Atto 3 goes further on a charge and charges faster on DC.

Last reviewed: September 2026

Side by side

BYD Atto 3 Evo and Sealion 7 compared
	Atto 3 Evo Dynamic	Atto 3 Evo Premium	Sealion 7 Premium	Sealion 7 Performance
Price before on-road costs	$41,990	$46,990	$54,990	$63,990
Battery	60.48 kWh	74.88 kWh	82.56 kWh	82.56 kWh
WLTP range	420 km	510 km	482 km	456 km
Drive / power	FWD, 150 kW / 310 Nm	RWD, 230 kW / 380 Nm	RWD, 230 kW / 380 Nm	AWD, 390 kW / 690 Nm
0-100 km/h (claimed)	7.3 s	5.5 s	Not stated	4.5 s
AC / DC charging peak	7 kW / 110 kW	11 kW / 220 kW	11 kW / 150 kW	11 kW / 150 kW
Length / wheelbase	4,455 / 2,720 mm	4,455 / 2,720 mm	4,830 / 2,930 mm	4,830 / 2,930 mm
Cargo space (seats up)	434 L	490 L + 101 L front trunk	500 L + 58 L front trunk	500 L + 58 L front trunk
ANCAP rating	Five stars (2022, per CarExpert)	Five stars (2022, per CarExpert)	Five stars (2025)	Five stars (2025)

The Sealion 7 buys a bigger body, not more range or faster charging.

Price

The Sealion 7 Premium costs $54,990 and the Sealion 7 Performance $63,990, both before on-road costs. That is $8,000 more than the Atto 3 Evo Premium and $13,000 more than the Atto 3 Evo Dynamic. CarExpert lists Sealion 7 drive-away prices of $59,857 and $69,307. Both models carry the same BYD warranty: 6 years or 150,000 km for the car, and 8 years or 160,000 km for the battery.

Same motor, different range

The Sealion 7 Premium and the Atto 3 Evo Premium use the same 230 kW and 380 Nm rear motor. The Sealion 7 has the larger battery, at 82.56 kWh against 74.88 kWh, but the Atto 3 goes further: 510 km of WLTP range against 482 km. The difference is efficiency, because the claimed energy use is 19.9 kWh/100 km for the Sealion 7 and 16.4 kWh/100 km for the Evo Premium.

On DC, the Atto 3 Evo Premium peaks at 220 kW and the Sealion 7 at 150 kW. The Beep quotes 10-80% in around 32 minutes for the Sealion 7 under ideal conditions. Both charge at 11 kW on AC. The charging page covers the Atto 3 in detail.

Size and space

The Sealion 7 is 375 mm longer, at 4,830 mm against 4,455 mm, and its wheelbase is 210 mm longer, at 2,930 mm. EV Central highlighted the Sealion 7's cabin and rear-seat space. The cargo figures are closer than the body sizes: the Sealion 7 has 500 liters of cargo space and a 58-liter front trunk, while the Atto 3 Evo Premium has 490 liters and a 101-liter front trunk.

Safety rating

The Sealion 7 has a five-star ANCAP rating from 2025, covering all variants built from January 2025, with scores of 87% for adult occupants, 93% for children, 76% for vulnerable road users, and 78% for safety assist. The Atto 3 holds a five-star rating from 2022, and CarExpert reports that the Evo carries it, although ANCAP's own page lists only the classic variants.

Reviews

RACV called the Sealion 7 "a compelling option for value-seeker families", and it criticized the stiff suspension and the rear visibility. EV Central gave the Sealion 7 Premium 4 out of 5 and recommended it over the Performance, although it found the infotainment fiddly and the DC charging behind newer electric cars. The review page covers the Atto 3 reviews.

Verdict

The Atto 3 Evo Premium is the better buy for most buyers, because it has the same motor as the Sealion 7 Premium, more range, and faster DC charging for $8,000 less. The Sealion 7 is the better buy for a family that needs the larger cabin and rear seat, or for a buyer who wants all-wheel drive, which only the Sealion 7 Performance offers of the two in Australia.

So, the Sealion 7 is worth the extra money for its size, not for its range or charging.

Atto 3 vs Sealion 7 FAQ

Which is bigger, the BYD Atto 3 or Sealion 7?

The Sealion 7 is bigger. It is 375 mm longer than the Atto 3, with a 210 mm longer wheelbase, although the cargo space with the seats up is similar.

Which has more range, the BYD Atto 3 or Sealion 7?

The Atto 3 Evo Premium has the most range, at 510 km on the WLTP test. The Sealion 7 Premium is rated at 482 km and the Performance at 456 km, while the Atto 3 Evo Dynamic is rated at 420 km.

Is the BYD Sealion 7 worth the extra over the Atto 3?

It is worth it for a buyer who needs more cabin and rear-seat space, or all-wheel drive. On range and DC charging, the $8,000 cheaper Atto 3 Evo Premium is ahead.

Other comparisons

Sources

Prices and specs were checked in September 2026. This site is independent of BYD.