MG is set to bring semi-solid-state battery technology to its next generation of plug-in hybrid SUVs, aiming to boost efficiency and electric driving performance. The company, owned by SAIC, will use its SolidCore batteries and new Plug-in Hybrid+ system across three SUV segments. This move follows MG’s rapid growth in Europe, where it has become the continent’s leading Chinese car brand.
MG’s Semi-Solid-State Battery Plans
MG has confirmed that its upcoming plug-in hybrids will feature SolidCore semi-solid-state batteries, developed in partnership with QingTao Energy. These batteries use a manganese-based chemistry, a silicon-carbon anode, and contain only about 5% liquid electrolyte—significantly less than the 10–15% typically found in conventional lithium-ion batteries.
The new battery technology will be rolled out in three new SUVs spanning the B, C, and D segments, though MG has not yet named the models or provided a launch timeline. The company has already introduced a manganese-based semi-solid battery in the MG4 Anxin Edition for the Chinese market.
Plug-in Hybrid+ System: Efficiency and Performance
MG’s Plug-in Hybrid+ system will be available with dedicated 1.1-liter and 1.5-liter turbocharged engines, which the company claims achieve peak thermal efficiencies of more than 42% and 43%, respectively. According to MG, the system maintains above 40% thermal efficiency during about 90% of driving conditions, while electric drive efficiency can reach 90%.
The system is designed to prioritize electric propulsion at low speeds, use power-split operation at medium speeds, and switch to direct engine drive at higher speeds. MG says vehicles equipped with this system will accelerate from 0 to 100 km/h (62 mph) in under 6 seconds, and from 80 to 120 km/h (50 to 75 mph) in as little as 3.5 seconds, though it has not specified which models will achieve these figures.
Quieter and Smarter Hybrid Driving
A new power-split hybrid transmission continuously varies the contributions of the engine and electric motors based on speed and load. The system also includes a disconnect mechanism that can fully isolate the generator during electric driving, reducing mechanical drag and improving efficiency.
MG claims this approach makes electric driving up to 5 decibels quieter compared to conventional plug-in hybrid systems, bringing the experience closer to that of a pure EV.
Competitor Comparison
MG’s move to semi-solid-state batteries in plug-in hybrids comes as competition intensifies in the European market. Key rivals include the Li Auto L7, Aito M7, and BYD Tang DM-i, all of which offer advanced hybrid or extended-range systems. MG’s focus on battery innovation and efficiency aims to set it apart, especially as it continues to expand its presence in Europe and beyond.
Historical Context
MG has experienced rapid growth in Europe, selling 190,000 vehicles in the first half of 2026—a rise of more than 20% compared to the same period in 2025. In 2024, MG sold 233,000 vehicles in Europe, marking a 105% year-over-year increase. By mid-2025, MG had surpassed Tesla to become Europe’s best-selling Chinese car brand.
Why this matters
MG’s adoption of semi-solid-state batteries in its plug-in hybrids signals a significant step forward for battery technology in mainstream vehicles. The company’s focus on efficiency, performance, and cold-weather capability could help address common concerns about plug-in hybrids, such as range loss and noisy operation.
As MG continues to grow its market share in Europe, these innovations may influence how other automakers approach hybrid and battery development, especially in regions with strict emissions targets and growing demand for electrified vehicles.
What this means for buyers
For consumers, MG’s upcoming plug-in hybrids promise improved electric driving performance, greater efficiency, and quieter operation. Buyers interested in advanced battery technology and strong hybrid performance may want to watch for MG’s new models as they become available in Europe and other regions.
With MG’s rapid expansion and focus on innovation, these new plug-in hybrids could offer a compelling alternative to established hybrid SUVs from other brands.
Related coverage from The Electric Viking
For more on MG’s battery technology plans, see MG to Launch First PHEV with Semi-Solid-State Batteries in 2027.
Key Specs
- Battery Technology: Semi-solid-state (SolidCore)
- Battery Chemistry: Manganese-based, silicon-carbon anode, ~5% liquid electrolyte
- Plug-in Hybrid+ Engines: 1.1L and 1.5L turbocharged
- Thermal Efficiency: Over 42% (1.1L), over 43% (1.5L)
- Electric Drive Efficiency: Up to 90%
- Noise Reduction: Up to 5 dB quieter in EV mode
- Acceleration (0-100 km/h): Under 6 seconds
- MG4 Anxin Edition Battery: 53.95 kWh, 537 km (~334 miles) CLTC range
