Toyota, Ford, and Honda have been recognized as leaders in four-cylinder engine reliability.
Over more than a century of automotive history, engineers have created thousands of engines — but only a few have gone down in history as benchmarks of durability and technical excellence. The research has compiled a ranking of most reliable four-cylinder engines that have proven their quality through millions of miles and decades of service without major failures.
1. Ford EcoBoost 2.0L (2010–2018)
Topping the list is Ford’s 2.0-liter EcoBoost, produced from 2010 to 2018. This engine became a symbol of the industry’s shift from bulky powerplants to compact yet powerful turbo units. Depending on the version, it delivered up to 301 hp and was used in models from Ford, Volvo, Jaguar, and Land Rover. Engineers achieved an optimal balance of power, efficiency, and longevity — with proper maintenance, these engines can easily last between 185,000 and 250,000 miles.
2. Toyota 22R/22RE (1981–1997)
In second place is the legendary Toyota 22R/22RE, a naturally aspirated engine produced from 1981 to 1997. It powered the indestructible Hilux pickups and 4Runner SUVs, renowned for their ruggedness. Its simple design, lack of turbochargers, and minimal electronics made the 22R a symbol of reliability — equally confident in desert heat or arctic cold.
3. Toyota T24A Dynamic Force Hybrid (since 2021)
Rounding out the top three is the Toyota T24A Dynamic Force Hybrid, introduced in 2021. Combining a 278-hp gasoline unit with an electric motor, it merges performance with efficiency. Already used in the Toyota Tacoma and Lexus TX, this hybrid powertrain has quickly earned a reputation for quiet, long-lasting operation.
4. Volvo Redblock B230 (1980s)
In fourth place comes the Volvo Redblock B230 — a cast-iron legend from the 1980s that powered the 240 and 740 models. Known for its simple design and bulletproof reliability, it’s not uncommon for these engines to stay running well past 310,000 miles. No wonder Swedes dubbed them the “engines of eternity.”
5. BMW S14 (E30 M3)
Fifth place goes to BMW’s S14, the heart of the iconic E30 M3 sports coupe. This naturally aspirated 2.3-liter engine produced up to 235 hp and was known for its high-revving character. Despite its racing pedigree, the S14 proved remarkably reliable — capable of enduring extended track use without losing power when properly maintained.
Modern Technology, Classic Reliability
The list also includes:
Volkswagen EA888 Gen3 (since 2007) — a 1.8-liter turbo engine known for its balance of power and efficiency, used in Audi, Skoda, Seat, and Volkswagen models.
Chevrolet 2.7 TurboMax (since 2018) — found in the Silverado and Colorado, it features an aluminum block and active valve management to cut fuel consumption without sacrificing performance.
Subaru EJ22 (1990–1999) — a naturally aspirated boxer engine with a low center of gravity and minimal vibration, ensuring smooth and balanced handling.
Hyundai Smartstream Gamma II (1.5L, since 2018) — a modern engine with advanced valve control and improved thermodynamics, combining smooth operation with Euro 6 emissions compliance.
Honda K24 (2001–2016) — one of the world’s most popular four-cylinder engines, used in the Accord, CR-V, and Civic Type R. Renowned for its durable block and tunability, many enthusiasts boost it to 300 hp without compromising longevity.