Engine Mazda L8-DE

The 1.8-liter Mazda L8-DE gasoline engine was produced by the company from 2002 to 2018 and was installed on the European versions of the 5, 6 and MX-5 models, as well as Ford cars under the QQDB index. There was a version of this unit with an inlet phase regulator with its own index L8‑VE.

The L-engine family also includes:

The engine was installed on:

  • Mazda 5 CR in 2004 – 2010;
  • Mazda 5 CW in 2010 – 2018;
  • Mazda 6 I (GG) in 2002 – 2007;
  • Mazda 6 II (GH) in 2007 – 2012;
  • Mazda MX-5 NC in 2005 – 2015.


Production years 2002-2018
Displacement, cc 1798
Fuel system distributed injection
Power output, hp 120 – 125
Torque output, Nm 160 – 170
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 83
Piston stroke, mm 83.1
Compression ratio 10.8
Features DOHC
Hydraulic lifters no
Timing drive chain
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.3
Fuel type petrol
Euro standards EURO 4
Fuel consumption, L/100 km (for Mazda 6 2003)
— city
— highway
— combined
Engine lifespan, km ~275 000
Weight, kg 102

Disadvantages of the Mazda MZR L8-DE engine

  • The entire period of operation of a car with this engine, owners have to deal with floating speed;
  • Flashing helps one, modification of the throttle helps others, but nothing to the third;
  • The weak points of the motor include the thermostat, which often simply jams;
  • Often there are leaks from under the valve cover and oil enters the candle wells;
  • There are no hydraulic lifters and valve clearances need to be adjusted every 100,000 km.

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