🏆 Top 5 most reliable engines in automotive history

In the world of cars there is a concept “perpetual motion” — an engine that doesn't break, pulls like a tank, and even outlasts the body of its car. Some of them have become legends: mechanics call them the standard of reliability, and owners call them a source of pride.

In this article we have collected TOP-5 most reliable engines in the history of the automotive industrywho deservedly received the status of "unkilled". 💪

⚙️ 1. Toyota 2JZ-GTE — a legend from Japan 🇯🇵

📌 Characteristics:

• Volume: 3.0 l

• Type: inline 6-cylinder, turbo

• Power: 280–330 hp (in stock version)

• Resource: over 500,000 km without major repairs

💬 Why a legend:

Engine 2JZ-GTE — the heart of the iconic Toyota Supra A80. It is built with an excess of strength: a thick-walled cast iron block, massive connecting rods, turbines that can withstand anything.

It is easy to tune: enthusiasts have overclocked these engines to 1000+ horsepower, without changing the main details. And even after such experiments, the 2JZ continued to work like a clock. ⏱

🔧 Interesting:

• The mechanics joke: "If you broke a 2JZ, you were doing something wrong."

• In Japan, these engines are still being bought up at scrapyards — demand is insane even after 25 years.

👉 Summary: The 2JZ-GTE is a symbol of engineering excellence. One of the most reliable and durable engines in the world.

🚗 2. Mercedes OM617 — the diesel that never dies 🇩🇪

📌 Characteristics:

• Volume: 3.0 l

• Type: inline 5-cylinder diesel

• Power: 80–125 hp

• Resource: up to 1,000,000 km (!)

💬 Why a legend:

OM617 is classic diesel from the 70s–80s, which became a true icon. It was put on models Mercedes-Benz W123 and W126, which have been driving for decades as official taxis, trucks, and government vehicles.

The secret is simplicity. No electronics, turbines, or complex systems. Everything is mechanical, everything is repairable even in the field.

🔧 Records:

• There are real examples where OM617 passed over 1.2 million km without major repairs.

• In Africa, these motors still power old Mercedes cars, crossing the desert and transporting everything from people to watermelons. 🍉

👉 Summary: OM617 is the personification of the word “eternal diesel”If you change the oil regularly, it will outlive three owners.

🛠 3. Honda K20 — simplicity and durability at every turn 🇯🇵

📌 Characteristics:

• Volume: 2.0 l

• Type: inline 4-cylinder, gasoline, DOHC i-VTEC

• Power: 150–220 hp

• Resource: 400,000+ km without loss of compression

💬 Why a legend:

The Japanese from Honda created a real masterpiece: K20 — a motor that rotates up to 8500 rpm, but does not lose reliability.

He was put on Civic Type R, Accord Euro R, Integra — models that were famous for their drive and trouble-free operation.

The secret in the company system VTEC, which changes the valve timing. Thanks to this, the engine remains economical in the city and a "beast" on the highway.

🔧 Interesting:

• Honda owners joke: "The K20 is not afraid of anything except bad oil."

• Even after 20 years of operation, the engines retain excellent compression and smooth operation.

👉 Summary: K20 is the benchmark for reliability among gasoline engines. Simple, resilient, energetic - a true pride of Honda.

🚙 4. Toyota 1UZ-FE — the engine for the eternal Lexus 🇯🇵

📌 Characteristics:

• Volume: 4.0 l

• Type: V8, gasoline, naturally aspirated

• Power: 260–300 hp

• Resource: 700,000+ km without major repairs

💬 Why a legend:

1UZ-FE is the heart Lexus LS400, which in the 1990s turned the perception of Japanese quality upside down.
Toyota engineers built this V8 from scratch: aluminum block, plain bearings, balanced crankshaft, perfect assembly accuracy.

The result is an engine that runs as quietly as a Swiss watch and is capable of traveling over 700,000 km without intervention.

🔧 Interesting:

• In the US, these engines are even installed on boats, pickup trucks, and sports cars.

• In the 2020s, the 1UZ is often used for “swaps” — they put it in old cars instead of worn-out engines, because it is “indestructible.”

👉 Summary: 1UZ-FE is an example of what premium quality should look like. Quiet operation, power and fantastic resource.

🚐 5. BMW M57 — the “German tank” among diesels 🇩🇪

📌 Characteristics:

• Volume: 3.0 l

• Type: inline 6-cylinder turbodiesel

• Power: 184–286 hp

• Resource: 500,000+ km (actually up to 800,000 km)

💬 Why a legend:

The BMW M57 is a diesel engine that combines endurance and dynamics. It was installed on BMW 330d, 530d, X5, X3, Range Rover L322.

The design is so strong that even after hundreds of thousands of kilometers, the engine does not lose traction or smoke.
Thanks to its cast iron block, high-quality pistons and Common Rail system, the M57 has become a symbol German reliability.

🔧 Interesting:

• This engine is used for swaps on SUVs - it “pulls” even with a weight of over 2 tons.

• With proper care, it can survive two bodies — 20 years of operation without major repairs.

👉 Summary: The M57 is a balance of power, durability, and comfort. One of the best diesel engines of the 21st century.

🧰 Honorable Mentions (which are also worth knowing)

• Volvo B230F — a Swedish naturally aspirated engine, famous for its simplicity and resource of 600,000+ km.

• VW 1.9 TDI (ALH) — a diesel engine that the whole world loves: simple, economical, runs 500,000 km without problems.

• Mazda BP-Z3 — the engine from the iconic MX-5, light and almost immortal.

🔩What do all these engines have in common?

✅ Simple design - without excessive electronics.
✅ Excess safety margin - the metal is thicker than necessary.
✅ High-quality materials - cast iron, cold forged steel, high-purity aluminum.
✅ Regular maintenance is what extends the life of the engine.

🧭 Advice from experts

No matter which engine you choose, the main thing is care.
Even the most reliable engine will “die” from old oil or poor-quality fuel.

🔧 Change the oil every 8–10 thousand km, use filters from proven brands, do not skimp on fuel.
And then your engine will be as durable as the legends on this list.

🚘 Conclusion