Used BYD Dolphin vs Seagull: Which Cheap EV Wins in 2026?

The used BYD Dolphin vs Seagull choice comes down to $3,500 and 115 km of range. A 2023 Seagull at 305 km CLTC costs $7,500-$9,500; a 2021 Dolphin at 405 km costs $10,500-$12,500. The Dolphin is bigger, faster-charging and holds four adults. The Seagull parks anywhere.

Both use Blade LFP chemistry, both are sold in dozens of export markets, both will outlast most of their owners’ patience. The gap is packaging.

How do they compare on paper?

Spec	BYD Seagull	BYD Dolphin
Length	3,780 mm	4,290 mm
Battery	30.08 kWh Blade LFP	44.9 kWh Blade LFP
CLTC range	305 km	405-420 km
Power	75 hp	95 hp
0-100 km/h	13.5 s	10.9 s
DC charging	30-40 kW	60-65 kW
Used FOB 2026	$7,500-$9,500	$10,500-$12,500

Where does the Seagull win?

Price per kilometre, and city agility. The 2023 Seagull Free Edition is 3.78 m long — shorter than a Fiat Panda. Turning circle is 4.9 m, which makes multi-point turns in a crowded market a non-event.

It is also the cheaper car to insure by 20-30% in most markets, and tyres cost less because they are 175-section rather than 195. Over five years the Seagull saves maybe $1,800-$2,400 in running costs, on top of the purchase saving.

Where does the Dolphin win?

Charging speed and seats. 60-65 kW DC means 30-80% in about 30 minutes on the 2021 Dolphin Fashion, against 45-50 minutes on the Seagull. On a road trip that is the difference between one stop and two.

Then there is the rear seat. The Seagull’s back bench is for children and short trips. The Dolphin’s is for adults. If you have two teenagers, the Seagull is not the car. Full stop.

Is the Dolphin worth the extra $3,500?

Yes, if any of these are true: you carry adults in the back, you drive over 100 km a day, or you do regular 200-300 km trips. The range and charging difference removes a whole category of planning stress.

No, if the car is a second vehicle for school runs and groceries. In that case the Seagull is the better buy and the $3,500 stays in your account. A 2024 Seagull Honor with 305 km is a $8,800 car that will do 8 years of city work without complaint.

What about battery ageing on each?

The 30 kWh pack in the Seagull works harder per kilometre — it sees more full cycles for the same distance. A Seagull at 60,000 km has done roughly 400 equivalent cycles; a Dolphin at the same distance, about 270. Both are nowhere near the 3,000-cycle LFP rating, but the Dolphin will show less degradation at year six.

Expect 93-96% SOH at 50,000 km on both. Expect 88-91% at 100,000 km. Neither number should scare you.

Key Takeaways

• The Dolphin costs $3,500 more and gives 100+ km more range.
• Only the Dolphin carries four adults in comfort.
• Dolphin DC charging is roughly twice as fast.
• The Seagull wins on purchase price and city parking.
• Both hold 93-96% battery capacity at 50,000 km.