The new MG4 unveils a revolutionary battery
This page is translated from the original post "La nouvelle MG4 dévoile une batterie révolutionnaire" in French.
- 20/07/2025 10:43
In addition to a less divisive design, the new MG4 will benefit from a semi-solid battery that will disrupt autonomy and safety.
Since customs barriers were erected in Europe, the MG4 has become less visible on our streets. However, with a price of 24,900 euros in France for its 49 kWh battery version (350 km), the positioning is aggressive.
But one point has always been put back on the table: its divisive design. This will soon be a thing of the past, as the new generation is already on the way. In China, where production began on July 17, 2025, the first deliveries will take place as early as August 5.
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A lightweight battery with amazing autonomy?
During a technical conference, MG unveiled the technical specifications of its new MG4. It was revealed that its battery will offer 70 kWh of capacity, with power transmitted to the rear wheels of 120 kW (163 horsepower). A return to some realism, as values above 200 horsepower make no sense when the customer aims for maximum autonomy.
This reduction in power has also been made possible by the integration of a new, much lighter battery technology. The weight would be 1485 kg, compared to 1641 kg for the current 64 kWh version, representing a reduction of 156 kg. That’s no small feat!
In terms of autonomy, the MG4 2025 will climb to 537 km in the Chinese mixed CLTC cycle, or about 480 km in the European WLTP cycle. The current MG4 starts at 350 km and goes up to 435 km. Most importantly, the new MG4 will feature a semi-solid battery technology that contains almost no liquid electrolyte, a highly flammable product.
The risks of fire and thermal runaway, especially in the case of an accident and intrusion into the battery pack, are significantly reduced. Finally, the energy density is expected to be 180 Wh/kg, and the cold effect will be less noticeable, with a 13.8% better autonomy in negative temperatures compared to an LFP (lithium-iron-phosphate) battery.
What about the price?
Finally, a semi-solid battery charges much faster. The question remains about the price, as changes in technology always imply an initial impact before industrial democratization.
One can reasonably estimate the selling price in Europe to be around 34,000 euros before discount, as is currently the case.
Finally, the risk when being a pioneer of new technology is the lack of long-term feedback. Reliability, longevity, performance, and then recycling in the second life phase. Challenges that do not intimidate MG, as one must not stop progressing to stay current in the electric field.
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