12. Subaru EJ22 – The Unusually Durable Flat-Four
The Subaru EJ22 engine, a 2.2-liter flat-four, was a cornerstone in 1990s models like the Legacy and Impreza. Its closed-deck design and low-stress configuration contributed to its exceptional durability, often surpassing 250,000 miles with proper maintenance. (slashgear.com)
Despite its robust design, the EJ22 has a few known issues. Cylinder head gaskets can wear out over time, leading to engine overheating and coolant loss. Regular monitoring of the cooling system and timely replacement of gaskets can mitigate this risk. (car-inform.com)
Additionally, the engine utilizes a timing belt, which should be replaced every 60,000 to 105,000 miles to prevent potential engine damage. (engineswork.com)
Overall, the EJ22’s design emphasizes low-stress daily driving, with minimal required intervention, making it a favorite among those seeking a dependable powertrain for their vehicles. (slashgear.com)