What are the main advantages of the 4D56 engine?

Legendary reliability with many examples exceeding 500,000 km without major rebuilds in commercial applications. Exceptional durability under harsh operating conditions including extreme temperatures, poor fuel quality, and heavy loads. Simple mechanical design facilitates maintenance and repair in markets with limited technical infrastructure. Strong torque output provides excellent pulling power for commercial and heavy-duty applications. Global parts availability makes maintenance possible virtually anywhere in the world at reasonable costs. Proven performance in commercial applications including taxis, delivery vehicles, and heavy-duty trucks. Excellent fuel economy for the displacement and application, particularly important in commercial use. Time-tested design with decades of proven service across diverse global markets and conditions. Adaptable to various fuel injection systems from mechanical to modern common rail technology.

What are common issues and problems with the 4D56?

Timing belt replacement is absolutely critical - interference engine design means belt failure causes catastrophic damage. Injector pump problems can be expensive on mechanical injection versions, particularly with contaminated fuel. Glow plug system failures are common in cold climates, affecting cold-start performance significantly. EGR valve clogging on newer versions, particularly in urban driving conditions with poor quality fuel. Head gasket issues can occur if the engine is overheated or subjected to poor maintenance practices. Turbocharger longevity varies significantly with maintenance quality and operating conditions.

What torque does the 4D56 engine produce?

The 4D56 engine produces 196-314 Nm.

What is the compression ratio of the 4D56 engine?

The compression ratio of the 4D56 engine is 21.0:1.

How much displacement does the 4D56 engine have?

The 4D56 engine has 2.5L (2477 cc) of displacement.

What is the fuel consumption of the 4D56 engine?

Reported fuel consumption for the 4D56 engine is 8.5-6.8L/100km.

Mitsubishi 4D56 Engine Specs

Mitsubishi

Quick overview

Mitsubishi 4D56 is a 2.5L (2477 cc) diesel engine with 73-140 HP, 196-314 Nm, 21.0:1 compression ratio. Fuel consumption: 8.5-6.8L/100km. Typical service life: 500,000+.

73-140

2.5L (2477 cm³)

Displacement

196-314 Nm @ 2000 RPM

Torque

Diesel

Fuel

Description

The incredibly successful 4D56 became one of the most widely used diesel engines in automotive history, powering millions of vehicles across six continents for over four decades. This robust 2.5-liter turbodiesel engine established Mitsubishi as a leader in diesel technology for both passenger and commercial vehicles worldwide.

Built with proven iron block construction and designed for extreme durability, the 4D56 featured various injection systems from mechanical to common rail, turbocharging options, and intercooling. The engine was engineered to operate reliably under harsh conditions in developing markets while meeting emissions standards in developed countries.

The 4D56's remarkable longevity and global success stemmed from its fundamental reliability and adaptability - it powered everything from pickup trucks and SUVs to commercial vans and buses, demonstrating exceptional versatility across diverse applications and markets.

General Information

Production Years: 1980-present

Fuel Type: Diesel

Environmental Standards: Euro 2-4

Fuel Consumption: 8.5-6.8L/100km (34.6-27.7 mpg)

Power (HP): 73-140

Displacement: 2.5L (2477 cm³) (151.2 cu.in)

Torque: 196-314 Nm @ 2000 RPM (145-232-1475 lb-ft)

Cylinder Block Alloy: Aluminum alloy

Cylinder Head Alloy: Aluminum alloy

Has Turbo: Yes

Engine Layout: I4

Aspiration Type: Turbocharged

Fuel System: Mechanical/Common Rail Injection

Head Type: SOHC, 8 valves

Timing Drive: Belt

Cooling Type: Liquid cooling

Cylinders Count: 4

Technical Details

Cylinder Diameter: 91.1mm

Piston Stroke: 95.0mm

Total Valves: 8

Firing Order: 1-3-4-2

Weight: 180 kg (397 lbs)

Rings per Piston: 4 (3/1)

Compression Ratio: 21.0:1

Hydraulic Lifters: No

Cylinder Coating: Cast iron sleeve

Minimum Octane: 98

Maintenance

Oil Capacity: 7.2L (7.6 qts)

Recommended Oil: 15W-40

Operating Temperature: 80-90°C (176-194°F)

Thermostat Temperature: 87-92°C (189-198°F)

Service Life (km): 500,000+ (311 miles)

Timing Belt/Chain Interval: 90,000-120,000 km

Scores

Reliability

Economy

Power

Values 1–100. Calculated from engine specs.

Advantages

+ Legendary reliability with many examples exceeding 500,000 km without major rebuilds in commercial applications.
+ Exceptional durability under harsh operating conditions including extreme temperatures, poor fuel quality, and heavy loads.
+ Simple mechanical design facilitates maintenance and repair in markets with limited technical infrastructure.
+ Strong torque output provides excellent pulling power for commercial and heavy-duty applications.
+ Global parts availability makes maintenance possible virtually anywhere in the world at reasonable costs.
+ Proven performance in commercial applications including taxis, delivery vehicles, and heavy-duty trucks.
+ Excellent fuel economy for the displacement and application, particularly important in commercial use.
+ Time-tested design with decades of proven service across diverse global markets and conditions.
+ Adaptable to various fuel injection systems from mechanical to modern common rail technology.

Pay Attention

! Timing belt replacement is absolutely critical - interference engine design means belt failure causes catastrophic damage.
! Injector pump problems can be expensive on mechanical injection versions, particularly with contaminated fuel.
! Glow plug system failures are common in cold climates, affecting cold-start performance significantly.
! EGR valve clogging on newer versions, particularly in urban driving conditions with poor quality fuel.
! Head gasket issues can occur if the engine is overheated or subjected to poor maintenance practices.
! Turbocharger longevity varies significantly with maintenance quality and operating conditions.

Used in Vehicles

Mitsubishi Pajero V2/V4/V6 (1991-2006)

Mitsubishi L200 K7/K6 (1996-2015)

Mitsubishi Delica D5 (2007-present)

Mitsubishi Challenger K9 (1996-2008)

Mitsubishi Canter FE (1993-present)

Hyundai H100 Porter (1993-2004)

Hyundai Starex H1 (1997-2007)

Hyundai Galloper (1991-2003)

Kia Bongo K2500 (1997-2012)

Kia Pregio (1995-2006)

Isuzu Trooper (1998-2002)

Chrysler Voyager (2000-2008)

Peugeot Boxer (1994-2006)

Citroën Jumper (1994-2006)

Fiat Ducato (1994-2006)

Ford Transit (2000-2006)

Volkswagen LT (1996-2006)

Mercedes Sprinter (1995-2006)

Ssangyong Korando (1996-2006)

Ssangyong Musso (1993-2005)

Proton Arena (2002-2010)