Two BYD plug-in hybrids sold in China are advertised with combined ranges above 1,250 miles when their batteries and fuel tanks are full: the Qin L DM-i at 2,100 km (about 1,305 miles) and the Seal 06 DM-i at 2,110 km (about 1,311 miles). Those are manufacturer figures, not battery-only range or a guarantee of how far a driver will travel in everyday conditions.
Which cars are advertised to go more than 1,250 miles?
BYD’s China-market Qin L DM-i and Seal 06 DM-i are the models behind the headline. BYD describes each figure as combined range with a full charge and a full tank. That total draws on both electricity stored in the battery and petrol; neither car is a battery-electric vehicle that covers the advertised distance on electricity alone.
| Model and market | Advertised combined range | Published depleted-battery fuel consumption | Basis and source |
|---|---|---|---|
| BYD Qin L DM-i, China | 2,100 km (about 1,305 miles), full charge and full tank | 2.9 L/100 km | BYD model page; the fuel-consumption figure is identified as NEDC. BYD Qin L DM-i specifications |
| BYD Seal 06 DM-i, China | 2,110 km (about 1,311 miles), full charge and full tank | 2.79 L/100 km | BYD model page; the fuel-consumption figure is identified as NEDC. BYD Seal 06 DM-i specifications |
The English-language “1,250 miles” phrasing is a rounded conversion of a claim above 2,000 km. Bloomberg reported BYD’s 2,000-km claim in May 2024, but its report was coverage of the announcement, not an independent driving test. Bloomberg’s May 29, 2024 report
What does “without refueling” mean here?
It means travelling on a full battery and a full petrol tank before needing to replenish either energy source. The distance is a combined-range claim, not a promise that the car will go 1,250 miles without charging, and not an electric-only range figure. BYD characterizes its DM-i system as electric-focused, with a petrol hybrid system available. BYD’s SEAL 6 DM-i system description
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The China model pages also list fuel consumption with a depleted battery: 2.9 L/100 km for the Qin L DM-i and 2.79 L/100 km for the Seal 06 DM-i, both on the NEDC basis. These figures describe a different condition from the full-charge-and-full-tank combined-range claim, so they should not be used as if they were a direct measure of the same test.
How does the European SEAL 6 DM-i compare?
BYD also sells a related SEAL 6 DM-i in Europe, as a sedan and a Touring estate. Its 2025 European launch announcement gives WLTP combined-range figures by body style and trim. They are market-specific figures and should not be substituted for the China-market Qin L DM-i or Seal 06 DM-i claims.
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| European SEAL 6 DM-i configuration | WLTP combined range |
|---|---|
| Boost sedan | Up to 1,505 km (about 935 miles) |
| Comfort Lite or Comfort sedan | 1,455 km (about 904 miles) |
| Touring estate | 1,350 km (about 839 miles) |
These are WLTP combined figures from BYD’s 2025 European launch announcement. BYD notes that configurations differ in battery capacity, system power, pure-electric range and combined range. For Spain, BYD also publishes model-level DM-i combined-range information on its DM-i technology page.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Should drivers expect to cover the advertised distance?
Not necessarily. The 2,100-km and 2,110-km figures are BYD claims for China-market models under stated full-charge and full-tank assumptions. The available evidence does not establish that an independent road test has verified those headline distances. Actual distance will depend on driving conditions and how the vehicle is used, so treat the advertised combined range as a manufacturer figure rather than a real-world guarantee.
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- 2.Adopted high-quality iridium center electrode, ultra-thin electrode design provides faster ignition, stable combustion and lower fuel consumption. High temperature resistant shell can resist long-term engine high heat environment, reduce carbon deposit accumulation, extend service life up to 60,000 miles.
- 3.Excellent cold start performance, effectively eliminate engine jitter, stalling and weak acceleration problems. Uniform flame propagation improves engine operating efficiency, brings smoother driving experience on urban roads and highways.
- 4.Precision machining ensures thread size, gap and thread pitch fully match original factory parameters. Anti-rust coating on metal surface prevents corrosion caused by humid climate, suitable for all daily commuter vehicles. Complete kit for direct replacement, no extra accessories needed.
- 5.Each spark plug undergoes strict factory ignition test before shipment to guarantee stable performance. If you receive mismatched, damaged or defective products, please contact our customer service at any time, we will provide return, exchange and refund service quickly.
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What to check before comparing the figures
- Market and exact model: Qin L DM-i and Seal 06 DM-i are the China-market names; the European SEAL 6 DM-i is a related model with its own specifications.
- Range type: Confirm that the number is combined range, not pure-electric range.
- Starting conditions: The headline China figures assume a full battery and full tank.
- Test basis: The European SEAL 6 DM-i figures are WLTP. The China pages identify NEDC for depleted-battery fuel consumption; do not mistake that consumption basis for the combined-range test cycle.
- Configuration: European range varies by sedan trim and Touring body style, while BYD says equipment and powertrain specifications vary across configurations.
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