Engine Mitsubishi 4B10

The 1.8-liter Mitsubishi 4B10 gasoline engine was assembled by the company from 2007 to 2017 and was installed on such popular models of the Japanese concern as Lancer, ASX and a similar RVR. This motor was created jointly with Hyundai and Chrysler as part of the Global Engine Manufacturing Alliance.

In 2002, Hyundai, Mitsubishi and Chrysler created the Global Engine Manufacturing Alliance and, within this alliance, designed a line of 1.8, 2.0 or 2.4 liter gasoline units. The only one of the three concerns who launched a 1.8-liter engine into the series was Mitsubishi. By design, this is a typical engine for its time with distributed fuel injection, an aluminum block with cast-iron sleeves, a 16-valve head without hydraulic compensators, a timing chain drive and a proprietary MIVEC type variable valve timing system. Based on this engine, the next generation gasoline unit with the 4J10 index was created.

The 4B1 family also includes engines: 4B11, 4B11T and 4B12.

The engine was installed on:

  • Mitsubishi ASX 1 (GA) in 2010 – 2016;
  • Mitsubishi Lancer 10 (CY) in 2007 – 2017.


Production years 2007-2017
Displacement, cc 1798
Fuel system distributed injection
Power output, hp 140 – 143
Torque output, Nm 172 – 178
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 86
Piston stroke, mm 77.4
Compression ratio 10.5
Features no
Hydraulic lifters no
Timing drive chain
Phase regulator MIVEC
Turbocharging no
Recommended engine oil 5W-30, 5W-40
Engine oil capacity, liter 5.0
Fuel type petrol
Euro standards EURO 4/5
Fuel consumption, L/100 km (for Mitsubishi Lancer 2008)
— city
— highway
— combined
Engine lifespan, km ~350 000
Weight, kg 122

Disadvantages of the Mitsubishi 4B10 engine

  • This is a very reliable unit without any weak points, however, at high mileage, it can consume oil due to severe wear of valve seats or the occurrence of rings. And in this engine, an open-jacketed block and an ellipse of cylinders are not at all uncommon.
  • On runs over 150 – 200 thousand km, the timing chain often stretches and starts to rattle. The replacement itself and spare parts for it will not be very expensive, but only if you do not encounter severe wear on the sprockets of the phase regulators, but they are quite expensive.
  • The owners also complain about the noisy operation of the unit, lubricant leaks, weak wiring, frequent burnout of the exhaust pipe ring and simply cracking of the exhaust manifold. And do not forget about adjusting the valve clearance, since there are no hydraulic lifters here.

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