The Ford Bronco Family showcases an impressive array of engine options, each meticulously engineered to deliver the perfect balance of power, efficiency, and durability. Whether navigating urban streets or conquering remote trails, these powerplants represent the cutting-edge Ford approach to meeting diverse driving demands. This comprehensive overview examines the technical specifications, maintenance requirements, and unique features of each engine available in the Bronco lineup.

The EcoBoost Four-Cylinder: Balanced Performance

The foundation of the Bronco engine lineup begins with the 2.3-litre turbocharged EcoBoost four-cylinder. This sophisticated powerplant generates 300 horsepower at 5,700 rpm and 441 Nm of torque at a low 3,400 rpm. Ford engineers have implemented several refinements to enhance performance and durability.

The engine block features an aluminum construction with cast-iron cylinder liners, providing an optimal balance of light weight and durability. Direct fuel injection operates at pressures exceeding 200 bar, precisely metering fuel for improved combustion efficiency. The turbocharger system features a twin-scroll design that virtually eliminates lag, along with a revised wastegate mechanism that enhances boost control during rapid throttle transitions.

An intelligent oil monitoring system analyzes driving conditions and determines optimal service timing, which optimizes maintenance intervals for the 2.3-litre EcoBoost. Typical oil change intervals range from 8,000 to 12,000 kilometres under normal conditions, with synthetic 5W-30 oil specified for all operating environments. The cooling system features a closed-loop design with a 5-year or 100,000-kilometre service interval under typical conditions.

The Twin-Turbocharged V6: Premium Power

For those requiring additional capability, the 2.7-litre twin-turbocharged EcoBoost V6 delivers 330 horsepower and an impressive 563 Nm of torque. This engine employs a unique compacted graphite iron block construction—a material significantly stronger than traditional cast iron while weighing less—paired with aluminum cylinder heads featuring integrated exhaust manifolds.

The dual turbocharger system utilizes water-cooled bearing housings and electronic wastegates for precise boost control across the entire rev range. Coolant flow through the turbocharger assemblies has been increased by 15% to enhance durability during extended high-load operation. The fuel delivery system operates at pressures up to 250 bar, allowing for multiple injection events per combustion cycle to optimize performance and emissions.

Maintenance requirements for the 2.7-litre V6 include oil changes using premium synthetic 5W-30 oil every 8,000 to 10,000 kilometres under normal conditions. The engine incorporates an enhanced oil cooler system, improving thermal management during demanding off-road scenarios. Spark plug replacement is recommended at 80,000 kilometres, using iridium-tipped plugs for turbocharged applications.

The Bronco Sport Powertrains: Efficiency Meets Capability

The Bronco Sport offers two distinct EcoBoost engines tailored to different driving preferences. The base 1.5-litre three-cylinder generates 181 horsepower and 257 Nm of torque, featuring aluminum block and head construction with an integrated exhaust manifold. This compact powerplant utilizes a unique three-cylinder balancing system to deliver exceptionally smooth operation despite its odd cylinder count.

The upgraded 2.0-litre four-cylinder EcoBoost delivers 250 horsepower and 376 Nm of torque. This engine incorporates advanced thermal management systems, including a split cooling system that can independently control cylinder head and block temperatures for improved efficiency during warm-up and high-load operation.

Both Bronco Sport engines feature maintenance-monitoring systems that typically recommend oil changes using 5W-30 synthetic oil every 8,000 to 12,000 kilometres. Experts recommend servicing the air filter every 24,000 kilometres under normal conditions and every 12,000 kilometres for vehicles driven in dusty environments.

Electrical and Battery Systems

The Bronco Family features enhanced electrical architectures to support both increased functionality and improved reliability in challenging conditions. All models utilize maintenance-free AGM (Absorbent Glass Mat) batteries, with a standard 80-amp-hour capacity and 92-amp-hour units in models equipped with additional electrical accessories.

The charging system has been upgraded, with alternators now producing 180 amps in standard models and up to 240 amps in variants equipped with winches or extensive auxiliary lighting. The power distribution architecture incorporates smart fusing technology that can temporarily allow current exceeding normal limits during high-demand situations, such as winch operation or recovery scenarios.

Battery management systems continuously monitor the state of charge and health, and they adjust charging parameters based on temperature and demand patterns. The system also uses a low-voltage protection mode that automatically disables non-essential functions when battery voltage drops below critical thresholds, preserving starting capability.

Engine Control and Management

The engine control modules in the Bronco Family represent significant advancements in processing capability and environmental resistance. The sealed units are rated IP67 for water and dust resistance, enabling continued operation even in the most extreme conditions. Processing power has increased by 40% compared to previous generations, enabling more sophisticated control algorithms that continuously optimize combustion parameters.

The Bronco G.O.A.T. (Goes Over Any Type of Terrain) modes interface directly with the engine management system, adjusting throttle mapping, shift points, and traction control parameters to suit specific off-road conditions. In Sand mode, for example, the system allows higher engine speeds and more aggressive throttle response, while Rock Crawl mode delivers precisely metered torque for controlled low-speed maneuvers.

5 Things Most People Don’t Know About 2025 Bronco Engines

• The 2.7-litre V6 engine features a unique “anti-lag” system that can maintain turbocharger speed during off-throttle moments, providing immediate boost when power is reapplied—critical for technical off-road situations
• All Bronco engines utilize a dual-path intake system that can automatically redirect airflow through an alternative route if the primary filter becomes excessively clogged during severe dust conditions
• The engine control modules can adjust timing and fueling parameters to compensate for extreme angles, allowing full power delivery even when the vehicle is traversing 30-degree side slopes
• The cooling systems incorporate a “limp home” mode that can allow continued operation at reduced power even after significant coolant loss, by alternating cylinder operation to manage temperatures
• EcoBoost turbochargers use specialized ceramic bearings that can withstand temperatures exceeding 980°C, significantly higher than conventional turbocharger designs

Common Questions About 2025 Bronco Family Engines

What oil type is recommended for the Bronco engines?

• All engines specify synthetic 5W-30 oil meeting the Ford WSS-M2C946-A specification. In extremely cold climates (below -30°C), you may use a 0W-30 oil meeting the same specification.

How often should you replace spark plugs in the Bronco EcoBoost engines?

• The 2.3-litre EcoBoost recommends spark plug replacement at 96,000 kilometres, while the 2.7-litre V6 requires replacement at 80,000 kilometres due to higher operating temperatures and pressures.

Is premium fuel required for the Bronco engines?

• The 2.3-litre EcoBoost operates on regular 87-octane fuel, though performance may improve slightly with premium. The 2.7-litre V6 recommends 91-octane or higher for optimal performance and durability, especially when used in demanding conditions.

What is the expected battery life in the Bronco?

• The AGM batteries typically last 4-5 years under normal conditions. Vehicles used primarily for short trips or those with numerous electrical accessories may experience shorter battery life of 3-4 years.

How does the G.O.A.T. terrain management system affect engine operation?

• This system modifies multiple engine parameters, including throttle response, torque delivery, and rpm limits. In Baja mode, for example, the system allows higher sustained rpm and disables automatic upshifts, while Eco mode adjusts timing and boost for improved fuel efficiency.

What maintenance is required for the turbochargers?

• The turbochargers themselves are maintenance-free for the life of the engine. However, regular oil changes using the specified synthetic oil are critical for turbocharger longevity, as the bearings rely on clean oil for lubrication and cooling.

How does the Bronco engine perform at high altitudes?

• All EcoBoost engines feature automatic altitude compensation that adjusts boost pressure to maintain performance at elevations up to 3,500 metres. Above this altitude, a gradual power reduction occurs to protect engine components.

What is the break-in procedure for a new Bronco engine?

• Ford recommends a 1,600-kilometre break-in period during which drivers should avoid sustained high engine speeds, full-throttle operation, and towing. Varying engine speeds during this period helps properly seat piston rings and other components.

How does the engine cooling system handle off-road conditions?

• The cooling system incorporates additional shielding to protect radiators and coolers from trail damage. The fan control system includes a “trail mode” that can preemptively engage cooling fans before temperature rise occurs when operating at low speeds in challenging conditions.

What is the expected engine life of the EcoBoost powerplants?

• With proper maintenance, the EcoBoost engines have a service life exceeding 240,000 kilometres. Many owners report significantly higher mileage with regular service and appropriate driving habits.