Leapmotor B05 vs BYD Dolphin: UK Buyer's Comparison (2026)

This is where the B05 separates itself most decisively. The Leapmotor B05 offers 300 miles of WLTP range — 35 miles more than the Dolphin's 265 miles — from a larger 67.1 kWh LFP pack against the Dolphin's 60.4 kWh Blade Battery. In practice, both figures deflate at motorway speeds and in British winter, but the gap is likely to persist: expect roughly 240 miles from the B05 and 210 miles from the Dolphin in realistic mixed-use conditions.

The charging picture is even more striking. The B05 supports up to 174 kW DC, clearing 30–80% in approximately 17 minutes at a compatible rapid charger. The Dolphin peaks at 88 kW DC — less than half — and requires around 41 minutes for 10–80%. On a long motorway run with a single rapid-charging stop, that gap could easily translate to 25 extra minutes of waiting. For drivers who regularly cover significant distances, this is material rather than marginal.

Both cars match on AC charging at 11 kW — genuinely quick for home and workplace top-ups — and both offer 3.3 kW V2L as standard, a useful feature for camping, trade use, or powering devices during a power cut. The heat pump is standard on both, meaningfully reducing range loss in cold weather compared with resistive heating. On pure energy management, the B05 is the stronger package at this price point, and it is not particularly close.

On headline price, the two cars are remarkably close — but the calculation is not straightforward. The BYD Dolphin starts at £30,230 for the Comfort trim (£31,730 for Design). The Leapmotor B05 lists at £30,495 but carries a LEAP-GRANT incentive of £1,500 that reduces the effective OTR to £28,995. Critically, that discount expires on 30 September 2026. Buyers who complete their purchase after that date pay the full £30,495 — £265 more than the Dolphin Comfort. If you are reading this after September 2026, treat the B05 as a similarly priced alternative rather than a cheaper one.

For company-car drivers, both cars attract 4% BiK in 2026/27, generating near-identical tax savings over an equivalent petrol car. The B05's P11D of £30,430 and the Dolphin's approximate £30,000 P11D produce very similar monthly liabilities at any tax rate. VED is identical at £190 per year from Year 2 onward — no advantage either way.

The one area where the Dolphin holds a clear, practical advantage is insurance. Group 33 is confirmed for both Comfort and Design trims — reasonable for a family hatchback of this specification. The B05's insurance group had not been confirmed at the time of publication. This is a genuine gap for buyers with higher personal risk profiles, those who have had previous claims, or anyone who finds it useful to compare insurance costs before committing to a car.

Warranty terms also diverge in favour of the Dolphin. Six years or 93,750 miles on the vehicle is meaningfully stronger than the B05's four years or 60,000 miles — particularly relevant for anyone planning to keep the car beyond year four or covering above 15,000 miles annually.

The single most important difference for family buyers is Euro NCAP. The BYD Dolphin UK carries a five-star rating from the 2023 test — earned, it is important to note, on the UK-specification body, which was re-engineered with a longer front structure (4,290 mm overall versus 4,070–4,280 mm for the Chinese model) specifically to satisfy European pedestrian-protection requirements. This was not a cosmetic adjustment; it represents genuine structural investment to meet the most demanding independent safety standard available to UK buyers. The certification applies to what you actually buy.

The Leapmotor B05 has not yet been submitted for Euro NCAP testing as of July 2026. That is not the same as failing — the car may well score creditably when tested — but buyers cannot know that yet. For parents choosing a family car, or anyone for whom pedestrian-safety performance is a factor, an untested NCAP status is a meaningful unknown. It is an honest reason to wait, or to choose the Dolphin.

Battery warranties are long on both cars — eight years each — but the Dolphin extends to 125,000 miles versus the B05's 100,000 miles. Vehicle cover diverges more sharply: the Dolphin's six-year, 93,750-mile term is class-leading at this price. A driver covering 16,000 miles per year would exhaust the B05's four-year, 60,000-mile policy before year four.

Two specific concerns have emerged from Chinese owner communities and early UK road tests. The B05's lane-keep assist has been widely described as aggressive and difficult to disable; Leapmotor has promised a corrective OTA update, which had not been deployed at the time of writing. The Dolphin's most-cited criticism in Chinese owner reviews — replicated independently by several UK road testers — is a significant A-pillar blind spot that can obscure cyclists and pedestrians at junctions. Neither issue has prompted a safety recall, but both are worth addressing directly on a test drive.

Chinese owner reviews provide the richest longitudinal data on both cars, since both were sold in volume in China well before their UK launches. The Leapmotor B05 is sold in China as the 零跑 Lafa 5; the BYD Dolphin is the 海豚 (Hǎitún).

On Autohome — China's largest automotive review platform with verified purchase reviews — the B05 scores 4.55 out of 5.0, edging the Dolphin's 4.50 from 4,224 verified owners. Both are creditable scores in a market where Chinese buyers write detailed, unsparing assessments; the margin between the two is within noise, and neither score should be read as a recommendation gap.

The divergence appears more sharply on 车质网 — China's statutory quality-complaint portal, broadly analogous in function to the UK's DVSA complaints database. The B05 scores 83 out of 100, indicating a relatively low rate of substantive complaints in proportion to sales volume. The Dolphin's equivalent figure is 2.8 out of 5.0, a notably weaker result for a car that has surpassed one million units globally. A larger owner base generates proportionally more complaints, and some of the Dolphin's deficit may reflect this scale effect. Nevertheless, the A-pillar blind spot is the single most-cited issue for the Dolphin across 车质网, consistent with what UK road testers have independently observed.

For the B05, the most-cited complaint in Chinese reviews is the LKA system behaviour — the same issue flagged by early UK adopters — followed by software stability in the first months of ownership. Leapmotor's 103% year-on-year sales growth and first profitable half in H1 2025 suggest the company is sufficiently resourced to address these through OTA; how promptly such fixes arrive for UK-market cars remains to be established.

Neither car is a compromise. Both offer more range, faster charging, or better value than most European alternatives at this price point — and both benefit from credible backing: the B05 through the Stellantis JV (51% Stellantis, 49% Leapmotor) with 79 UK retail outlets across the Stellantis dealer network, the Dolphin through BYD's own growing UK dealer presence. The question is not which car is better in the abstract; it is which trade-offs match your circumstances.

Buy the Leapmotor B05 if range and rapid-charging speed are your priorities. At 174 kW DC and 300 miles of WLTP, it is meaningfully ahead on both counts. The rear-wheel-drive character — noted favourably in UK press evaluations — adds a degree of engagement that the Dolphin's front-wheel-drive setup does not replicate. If you complete your purchase before 30 September 2026, the LEAP-GRANT brings the OTR to £28,995 — the cheaper entry point between the two. Do note the absent rear wiper; in a British winter this may prove more irritating than it sounds on a spec sheet. The LKA behaviour is a genuine nuisance until the promised OTA arrives, and the unconfirmed insurance group is a practical gap worth resolving before you sign.

Buy the BYD Dolphin if Euro NCAP assurance matters — particularly for a family with children in the car — or if a confirmed insurance group 33 and a six-year vehicle warranty are more important than charging speed. The five-star NCAP rating was earned on the UK-specific, structurally re-engineered body; it is not a certification carried over from a different market. The A-pillar blind spot is a genuine structural concern and not one that OTA can address: test it at junctions with pedestrians and cyclists present before you commit.

For company-car drivers, the BiK and P11D figures are close enough to be immaterial. The decision comes down to your charging infrastructure and typical journey pattern. There is no poor choice here — only the one that fits better.