In China, Tesla has introduced noticeable performance and range enhancements for the long-range variants of Model 3 and Model Y. The updates currently apply only to vehicles produced at the Giga Shanghai factory but offer a preview of upcoming updates in Europe and North America.
Model 3 Long Range: 0–100 km/h in 3.8 s & 753 km CLTC
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Acceleration: Reduction from 4.4 s to 3.8 s (same as the paid Acceleration Boost feature)
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Range: Increase from 713 km to 753 km according to CLTC – an increase of 5.6%
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Price: Increase of 10,000 RMB (≈ 1,400 USD), with boost and additional battery benefit already included
Extrapolated to the EPA value, the US Long Range model could potentially reach about 580 km range.
Model Y Long Range: Only more range
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Acceleration: unchanged
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Range: Increase from 719 km to 750 km CLTC (+4.3%)
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Outlook EPA: Would correspond to around 548 miles (≈ 883 km) according to US EPA if the percentage increase is adopted
Technical Background
The performance increase for the Model 3 matches Tesla's Acceleration Boost software, previously available as a paid upgrade. The fact that Tesla offers Boost and additional CLTC range gain in China as standard at the base price highlights the high competition there. Possible sources of range optimization include:
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Cell chemistry optimizations with CATL cells
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Aerodynamic fine-tuning
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Software recuperation adjustments
Rollout outside China likely
Similar off-cycle updates are likely to soon reach Giga Texas, Fremont, and Giga Berlin as well—provided the new battery cells are not subject to regulatory restrictions such as EU and EU import tariffs on Chinese batteries. While the range extension will most likely be rolled out globally, the Acceleration Boost will probably remain a paid software upgrade in other markets.
Conclusion
Tesla's China updates for Model 3 and Model Y once again raise the bar for range and performance. The combination of a standard acceleration boost and additional range makes the long-range variants even more attractive—a signal that Tesla is quickly transferring its optimizations to mass production.
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