Guide
Leapmotor B05 Reliability: What UK Buyers Need to Know (2026)
The Leapmotor B05 is new enough that its long-term reliability record is still being written — China launch was November 2025 and UK deliveries began mid-July 2026. Early China owner data is positive: Autohome score of 4.55/5.0 places it joint first in its segment. The 车质网 quality satisfaction score of 83/100 is respectable for a new model. But UK press reviews unanimously flag lane-keep assist (LKA) as intrusive and very difficult to disable — partly a regulatory constraint, partly a tuning issue that Leapmotor/Stellantis say they are addressing. The 4-year/60,000-mile vehicle warranty is the shortest in its class. No recalls have been issued in China or the UK. The frameless door wind noise is documented in both markets. As a brand-new model, treat China data as early signals rather than long-term verdict.
Kai Zhang, Editor-in-Chief · Editor-in-Chief · Updated 24 Jul 2026Early China owner data — positive start, limited sample
The Leapmotor B05 (sold in China as the 零跑 Lafa 5) launched in China on 28 November 2025, making it a very new model. By July 2026 — roughly eight months after China launch and days after UK deliveries began — around 125 Autohome owner reviews are logged. The signal is encouraging: a joint-first 4.55/5.0 score in its competitive segment. China's 车质网 quality satisfaction index rates it 83/100, ranking it second among 2026 model-year cars in its class. Neither platform has accumulated enough data for a long-term reliability verdict — treat these as early signals, not settled fact.
Of the 106 formal complaints filed on 车质网 as of June 2026, 17 concern product quality (covering 34 individual fault points) and 32 are service-related, mainly deposit disputes from the ordering rush. No safety-related complaints have triggered investigation. No recalls have been issued in China or the UK as of July 2026.
Known faults documented in both China and UK
A small number of issues appear in both Chinese owner platforms and UK press road tests, suggesting they are inherent to the B05's design rather than production variability. Both markets document the same top complaints, which is informative for a model only months old.
The frameless door design — a hallmark of the B05's premium positioning — creates wind noise at motorway speeds above roughly 55 mph. This is documented in 28 Autohome Chinese owner reviews and confirmed by Car Magazine's UK first drive. Leapmotor has not announced an engineering fix; frameless doors are a structural compromise. Separately, tyre noise at speed is noted by 20 Chinese owners, consistent with the B05's 18-inch tyres on the standard Continental rubber.
The LKA issue — a regulatory constraint, not just a calibration fault
Every UK press test of the B05 — Top Gear, Car Magazine, What Car?, Electrifying.com, The Car Expert, Autocar — flags the Lane-Keep Assist (LKA) system as intrusive and very difficult to disable. The system re-enables itself every time the ignition is cycled. This is not purely a Leapmotor calibration error; it is partly a consequence of EU General Safety Regulation (GSR) homologation requirements that mandate active LKA at every ignition cycle for five-star Euro NCAP eligibility.
Leapmotor International head of commercial operations Danilo Annese told CarExpert in June 2026: 'When you have a legal requirement, you cannot decide to deactivate things forever, but you need to have it every time you switch on and off the car.' Leapmotor/Stellantis are working on tuning improvements, but permanent deactivation is not legally possible under GSR. Buyers expecting to disable the system entirely will be disappointed.
Warranty — shortest in class, longest battery
The B05's warranty terms create a direct trade-off: the battery warranty is class-competitive, but the vehicle warranty is the shortest of any major Chinese EV sold in the UK. BYD offers 8 years on the vehicle; Jaecoo, MG SAIC, and Smart offer 7 years. The B05's 4-year/60,000-mile vehicle warranty sits alongside the Leapmotor T03 and Smart #1 as the shortest in this segment.
Leapmotor International is a joint venture: 51% Stellantis, 49% Leapmotor. Stellantis posted a US$26.3 billion net loss in 2025. However, Stellantis specifically cited LPMI as a strategic highlight in their 2025 results — and with FAW Group (Chinese state enterprise) taking a 5% stake in December 2025, the company has a dual backer structure that reduces pure financial collapse risk. Survival risk is rated LOW-MEDIUM: the JV structure and state-backed investor make sudden disappearance unlikely, but Stellantis's financial strain is worth monitoring.
Euro NCAP and recalls — not yet tested
As of July 2026, the Leapmotor B05 has not been tested by Euro NCAP. Testing is understood to be complete and a five-star result is anticipated (per CarExpert, June 2026), but this is an expectation, not a confirmed result. Do not rely on a five-star rating for purchase decisions — verify on euroncap.com before delivery.
No recalls have been issued for the B05 in China or the UK. The T03's CEPS steering recall (China, 2024) did not apply to the B05, which uses a different steering architecture.
Reliability verdict — promising but too new to be certain
The Leapmotor B05 starts well: joint-first in its segment on Autohome, no recalls, solid 车质网 score. For a model launched in China in November 2025, that's a better-than-average opening. The frameless door wind noise and small boot are design trade-offs, not defects. The LKA intrusiveness is a genuine flaw but also a regulatory constraint — partial improvement via OTA is promised.
What UK buyers need to watch: the 4-year/60,000-mile vehicle warranty is the shortest in class. If you plan to keep the B05 beyond four years, gap insurance or extended warranty is worth factoring into your running costs. The LEAP-GRANT (£1,500 off until 30 September 2026) is time-limited — check with your dealer if purchasing later. Euro NCAP result is expected but not yet confirmed — verify before delivery.
At £28,995 with the LEAP-GRANT, the B05 offers exceptional value in a segment where rivals typically cost £2,000–£5,000 more for comparable spec. The reliability case is early-positive, not proven. Revisit this guide in 12 months when larger UK and Chinese owner samples will give a clearer picture.
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