The global automotive industry has just recorded a significant advance in the development of internal combustion engines. The Horse Powertrain joint venture presented a new mechanical concept capable of recording extremely low consumption marks in official tests. The project combines precision mechanical engineering with the exclusive use of renewable energy sources to maximize kilometer yield.
The system achieves thermal efficiency much higher than the current market average. The initiative emerges as a viable alternative for the European energy transition at a time of uncertainty about the mass adoption of electric cars. Especialistas point out that the continuous improvement of traditional engines offers immediate environmental results. The strategy avoids the need to completely replace the circulating fleet with models powered exclusively by batteries.

Arquitetura mechanics raises the bar on thermal utilization
The project called H12 Concept uses as a starting point a mechanical base already established on the streets. The engineers profoundly modified the turbocharged three-cylinder block, known internally as the HR12, which currently equips several European sports and compact utility vehicles. The development team focused its efforts on the Valladolid unit, located in Spanish territory. The propellant achieved 44.2% thermal efficiency during bench evaluations.
Esse index represents a considerable leap forward for modern automotive engineering. Conventional gasoline-powered Motoress usually operate in the range of 35% to 40% utilization of the energy generated by burning. The significant gain results from a thorough calibration of the internal components. The compression ratio has been raised to a ratio of 17 to 1. The system responsible for exhaust gas recirculation has undergone a complete redesign to optimize heat flow.
Outros peripheral elements also received updates focused on reducing energy waste. A revised geometry turbocharger works in conjunction with a high-voltage ignition system. The integrated hybrid transmission acts directly to reduce losses due to mechanical friction. The mechanical set can reduce fuel consumption by up to 40% when compared to the average of new vehicles sold on the European continent over recent years.
Practical Testes validates drastic reduction in carbon emissions
The development of the prototype went beyond the barriers of computer simulation laboratories. The technical teams put the system to the test in real road traffic conditions. The route chosen for dynamic validations connected the cities of Valladolid and Móstoles, to Espanha. The route required different rotation regimes and varied speeds to attest to the robustness of the modifications applied to the driving block.
The results obtained in the European standardized cycle surprised the researchers involved in the project. Fuel consumption was below the 3.3 liter mark for every 100 kilometers traveled. The volume of carbon dioxide released into the atmosphere reached approximately 76 grams per kilometer driven. A medium-sized car equipped with this technology would stop emitting almost two tons of polluting gases over the course of a year of normal use.
The environmental viability of the project directly depends on the fluid used in the combustion chamber. The engine was fed exclusively with a product called Nexa 95, developed by the oil company Repsol. The chemical formulation completely eliminates the use of crude oil in its composition. The industrial process transforms organic waste, animal fats and discarded oils into a liquid with the same energetic properties as regular gasoline.
Corporate Parceria Strengthens Production on a Global Scale
The business structure behind technological advancement involves giants in the mobility and energy sector. Horse Powertrain operates as a company divided equally between the French group Renault and the Chinese manufacturer Geely. The shareholding structure gained a new member at the end of 2024. The Saudi oil company Aramco acquired a 10% stake in the business to boost research into synthetic and renewable fuels.
The company’s production capacity is impressive given the volume projected for the coming years. Assembly lines spread across different countries can deliver almost five million powertrains annually. The company supplies essential components to Japanese and Swedish automakers. The industrial scale facilitates rapid adoption of new technologies if the concept is given the green light for mass manufacturing.
The package of innovations implemented in the H12 concept includes the following technical advances that are fundamental to the success of the project:
- Aumento substantial in cylinder compression ratio to 17:1.
- Redesenho of the hot exhaust gas recirculation flow.
- Adoção of very low internal friction lubricants developed by Repsol.
- Electronic Gerenciamento optimized for integrated hybrid transmissions.
- Sistema ignition with high energy capacity coils.
- Calibração turbine specific for low speed regimes.
The integration of these mechanical factors with advanced fluid chemistry creates a highly efficient ecosystem. The strategic focus is on plug-in hybrid vehicles. Esses automobiles require a reliable and economical combustion engine to take over when the electric batteries run out during long journeys.
Perspectivas market and the future of sustainable mobility
The supply infrastructure is already beginning to adapt to receive the new energy compounds. The renewable fuel used in the tests can now be found at selected service stations in Spain. The product maintains the standard octane rating required by the owners’ manuals and meets all current technical specifications. The driver does not need to make any mechanical adaptations to the vehicle to use the new feature.
The commercial impact of this transition directly affects the petroleum derivatives distribution chain around the world. Veículos that require fewer trips to gas stations tend to change the revenue dynamics of retail chains over the next few decades. The global movement towards energy efficiency is forcing large distributors, including Brazilian companies like Petrobras and Ipiranga, to rethink their traditional business models for the future.
The development schedule foresees the construction of functional demonstrator vehicles by the beginning of 2026. The project’s partner automakers will evaluate the feasibility of installing versions derived from the prototype in their future commercial launches. The automotive market is closely following the developments of this technological initiative. The continuous investment in thermal engines proves that the electrification of the global fleet will still share space with very high-performance combustion solutions.