Ford Bronco 2.3L vs 2.7L EcoBoost: Which Engine Should You Choose?

The 2.3L EcoBoost and 2.7L EcoBoost can both make sense in a Ford Bronco, but they are not just a small-engine and big-engine version of the same setup. The 2.3L is a single-turbo four-cylinder that can be paired with the 7-speed manual or 10-speed automatic. The 2.7L is a twin-turbo V6 and comes only with the 10-speed automatic.

For 2026, Ford rates the 2.3L at up to 300 horsepower and 325 lb-ft of torque on premium fuel. The 2.7L is rated at up to 330 horsepower and 415 lb-ft. The bigger difference is torque: the 2.7L has 90 lb-ft more on premium fuel.

What Is the Difference Between the 2.3L and 2.7L Bronco Engines?

The 2.3L EcoBoost is an inline-four with a single twin-scroll turbocharger. The 2.7L EcoBoost is a V6 with two turbochargers and an intercooler.

2026 spec	2.3L EcoBoost	2.7L EcoBoost
Cylinders	Inline 4	V6
Turbo setup	Single twin-scroll turbo	Twin turbo
Premium-fuel output	300 hp / 325 lb-ft	330 hp / 415 lb-ft
Regular-fuel output	275 hp / 315 lb-ft	315 hp / 410 lb-ft
Transmission	7-speed manual or 10-speed automatic	10-speed automatic only
Max conventional towing	3,500 lb when properly equipped	3,500 lb when properly equipped

The 2.7L gives you a much larger torque increase than horsepower increase. That is why the V6 tends to feel stronger when the truck is loaded, climbing a grade, accelerating at highway speed, or turning larger tires.

How Much Power Do They Make on Regular vs. Premium Fuel?

Ford allows both engines to run on 87-octane fuel, but the advertised maximum horsepower and torque figures are based on premium fuel.

On regular fuel, Ford lists the 2.3L at 275 horsepower and 315 lb-ft of torque. With premium fuel, that rises to 300 horsepower and 325 lb-ft.

The 2.7L is listed at 315 horsepower and 410 lb-ft on regular fuel, and 330 horsepower and 415 lb-ft on premium.

The drop is more noticeable in horsepower than torque. If you are comparing the engines from a spec sheet, make sure both numbers are based on the same fuel.

Does the 2.7L Feel Much Faster?

The 2.7L has more power, but straight-line acceleration is not determined by engine output alone. Door count, tire size, axle ratio, Sasquatch equipment, vehicle weight, elevation, fuel, and added accessories all change how quickly a Bronco moves.

The part you are most likely to notice is the extra torque. On premium fuel, the 2.7L makes 415 lb-ft compared with 325 lb-ft from the 2.3L. That gives the V6 more reserve when you ask for power without needing as much throttle.

A lightly equipped 2.3L Bronco can still feel quick enough for daily driving. A heavier 4-door on 35-inch tires with passengers, armor, a roof rack, and gear gives the 2.7L more opportunity to show why the extra torque exists.

Which Engine Can You Get With the Manual Transmission?

The 7-speed manual is available only with the 2.3L. The 2.7L is 10-speed automatic only.

Ford calls the manual a 7-speed, but one of those ratios is the dedicated crawler gear. First gear is 6.56:1, while the crawler gear is even lower for slow trail work.

The automatic is available with the 2.3L and standard with the 2.7L. For 2026, Ford also made the 10-speed automatic available with the 2.3L Heritage Edition.

If a manual transmission is important to you, the engine decision is already made. For a deeper transmission comparison, see our Ford Bronco manual vs. automatic guide.

Which Engine Is Better Off-Road?

Engine torque matters off-road, but gearing matters too. The 2.3L manual can have a deeper crawl ratio than either engine with the automatic transmission.

Ford lists a 79.92:1 crawl ratio for the manual with the standard transfer case and 94.75:1 with the Advanced 4x4 system. The automatic is 57.19:1 with the standard transfer case and 67.80:1 with Advanced 4x4.

That means the 2.7L does not automatically have the advantage in every low-speed crawling situation just because it makes more engine torque. A manual 2.3L can use deeper gearing to move slowly and with more control.

For sand, steep grades, higher-speed trail driving, and a heavily loaded truck, the 2.7L's extra torque is easier to notice. For technical crawling, the rest of the drivetrain and tire setup matter enough that engine displacement should not be the only deciding factor.

Which Engine Is Better With 35s or 37s?

The larger and heavier the tire, the more useful the 2.7L's torque becomes. Larger tires add rotating mass and effectively make the drivetrain work harder, especially during acceleration and on grades.

That does not mean a 2.3L cannot run 35-inch tires. Ford sells 2.3L Broncos with the Sasquatch Package and 35-inch tires from the factory. The 2.3L also has access to a 4.70 axle ratio in certain configurations, which helps compensate for tire size.

With 37s, the engine is only one part of the equation. Steering load, clearance, gearing, spare-tire weight, braking feel, and calibration all start to matter. Our 37-inch tire mod guide covers the parts that can change once you move that far beyond stock.

Does the 2.7L Tow More?

Not in the standard 2026 Bronco lineup. Ford lists a maximum conventional tow rating of 3,500 pounds for both the 2.3L and 2.7L when properly equipped.

The 2.7L may feel less strained while pulling because it makes more torque, but the published maximum tow rating is still 3,500 pounds. Trailer weight, passengers, cargo, accessories, and the specific Bronco configuration can reduce what a given truck can carry or tow.

The Bronco Raptor is different. Ford lists a 4,500-pound maximum for the 3.0L Raptor, so do not use the Raptor number when comparing the 2.3L and 2.7L.

Which Engine Gets Better Gas Mileage?

The 2.3L generally has the advantage when comparing similar configurations, but there is no single fuel-economy number that applies to every Bronco with either engine.

Door count, transmission, tire package, axle ratio, roof configuration, and trim all affect the EPA label. Ford's April 2026 order guide still listed the 2026 fuel-economy entries as TBD across several configurations, so older 20-city/22-highway style figures should not be presented as a universal 2026 rating.

If fuel economy matters to your purchase, compare the EPA label on the exact configuration you are buying rather than choosing the engine from one generic MPG number.

Do You Need Premium Gas?

No. Ford lists 87 octane as the minimum for both the 2.3L and 2.7L, with 91 or higher recommended.

Premium fuel is required to reach the advertised 300-horsepower rating in the 2.3L and 330-horsepower rating in the 2.7L. Both engines reduce output on regular fuel.

That also means the fuel-cost difference is partly your choice. If you plan to run premium all the time, include that in your ownership budget for either engine.

Is the 2.3L or 2.7L More Reliable?

The biggest documented issue separating the two engines is Ford safety recall 24S55, NHTSA campaign 24V-635. It covers certain 2021-2022 Broncos with the 2.7L Nano EcoBoost built during the affected production period.

Ford found that some intake valves could become brittle and fracture, which could cause catastrophic engine damage and loss of drive power. NHTSA's recall filing lists 15,835 Broncos in the affected population, with Bronco production dates from May 1 through October 30, 2021.

Ford changed the intake-valve material for vehicles produced after October 31, 2021. The recall remedy uses an engine-cycle inspection process, with engine replacement if the vehicle fails the test.

Ford also created Customer Satisfaction Program 24N12. For vehicles covered by that program, Ford provides a one-time engine long-block replacement for qualifying valve-related failure for up to 10 years or 150,000 miles from the warranty start date, whichever comes first.

The 2.3L is not part of that 2.7L intake-valve recall. That does not prove every 2.3L is more reliable than every 2.7L. For a used Bronco, service history, mileage, build date, recall completion, and how the truck was modified matter more than a blanket reputation.

If you are looking at a 2021 or 2022 2.7L, check the VIN for open recalls before buying. Our Ford Bronco reliability by model year goes deeper into the early model years.

How Are the Two Engines Built Differently?

The 2.3L and 2.7L differ in more than cylinder count.

The 2.3L uses an aluminum block, direct fuel injection, and one twin-scroll turbocharger. The 2.7L uses a compacted-graphite-iron block, port and direct fuel injection, and two turbochargers.

Ford lists oil capacity at 5.6 quarts for the 2.3L and 6.0 quarts for the 2.7L. Both use a 10.0:1 compression ratio and both recommend 91-plus octane for maximum rated output.

Those differences do not mean one engine is automatically easier or cheaper to own in every case. They do explain why the 2.7L is a more complex package and why parts, service procedures, and engine-bay layout are not interchangeable between the two.

Which 2026 Bronco Trims Get Each Engine?

The 2026 lineup changed enough that older trim charts are easy to get wrong. Black Diamond is now a package rather than a standalone series, Wildtrak is a package on Badlands, and Everglades is no longer listed as a 2026 series.

Ford's 2026 technical specifications list the 2.3L as standard on Base, Big Bend, Outer Banks, Badlands, and Heritage Edition. The 2.7L is standard on Stroppe Edition and optional on Outer Banks, Badlands, and Heritage Edition.

There are fitment details inside those choices. On Badlands, Ford's 2026 order guide limits the 2.7L to the 4-door and pairs it with the 10-speed automatic. The Wildtrak Package on Badlands includes the 2.7L, automatic, Sasquatch Package, HOSS 3.0, and Black Appearance Package.

Raptor is outside this comparison because it uses the 3.0L EcoBoost V6. Read our Bronco Raptor engine guide for that powertrain.

Which Engine Makes More Sense in a Used Bronco?

Start with the VIN and build history, not the badge on the fender.

For a used 2.7L from 2021 or 2022, check whether recall 24S55 applies and whether the inspection or required repair was completed. Ask for service records instead of assuming a truck is clear because it has been driving normally.

For either engine, look for signs of tuning, added boost, non-stock intake or exhaust work, oversized tires, hard off-road use, and incomplete maintenance records. A stock, documented 2.7L can be a better used purchase than a neglected 2.3L, and the reverse can be true too.

The manual transmission is another reason to choose a used 2.3L. If you specifically want a manual Bronco, there is no factory 2.7L alternative.

FAQ: Ford Bronco 2.3L vs. 2.7L