Engine Mazda Y6 1.6 CiTD

The 1.6-liter Mazda Y6 or 1.6 CiTD engine was produced from 2004 to 2015 in two versions: the first generation units with the Y406, Y601, Y642 and Y646 indices were equipped with a 16-valve cylinder head, and the second generation engines with the Y650, Y655, Y661 and Y6Y1 indices equipped with an 8-valve cylinder head.

The Y-ENGINE family also includes diesel engines: Y4.

The engine was installed on:

  • Mazda 2 DE in 2009 – 2014;
  • Mazda 3 BK in 2004 – 2009;
  • Mazda 3 BL in 2009 – 2013;
  • Mazda 5 CW in 2010 – 2015.


Production years 2004-2015
Displacement, cc 1560
Fuel system Common Rail
Power output, hp 90 (Y406, Y646)
109 (Y601, Y642)
95 (Y655, Y661)
115 (Y650, Y6Y1)
Torque output, Nm 205 – 215 (Y406, Y646)
240 (Y601, Y642)
205 (Y655, Y661)
270 (Y650, Y6Y1)
Cylinder block aluminum R4
Block head aluminum 16v (Y406, Y646)
aluminum 16v (Y601, Y642)
aluminum 8v (Y655, Y661)
aluminum 8v (Y650, Y6Y1)
Cylinder bore, mm 75
Piston stroke, mm 88.3
Compression ratio 18.3 (Y406, Y646)
18.3 (Y601, Y642)
16.0 (Y655, Y661)
16.0 (Y650, Y6Y1)
Features DOHC (Y406, Y646)
DOHC (Y601, Y642)
SOHC (Y655, Y661)
SOHC (Y650, Y6Y1)
Hydraulic lifters yes
Timing drive chain and belt (Y406, Y646)
chain and belt (Y601, Y642)
belt (Y655, Y661)
belt (Y650, Y6Y1)
Phase regulator no
Turbocharging MHI TD025 (Y406, Y646)
Garrett GT1544V (Y601, Y642)
MHI TD02H2 (Y655, Y661)
Garrett GTC1244VZ (Y650, Y6Y1)
Recommended engine oil 5W-30
Engine oil capacity, liter 3.8 (Y406, Y646)
3.8 (Y601, Y642)
3.9 (Y655, Y661)
3.9 (Y650, Y6Y1)
Fuel type diesel
Euro standards EURO 3/4 (Y406, Y646)
EURO 3/4 (Y601, Y642)
EURO 4/5 (Y655, Y661)
EURO 4/5 (Y650, Y6Y1)
Fuel consumption, L/100 km (for Mazda 3 2007)
— city
— highway
— combined
Engine lifespan, km ~300 000

Disadvantages of the Y6 1.6 CiTD engine

  • In the engines of the first years of production, the camshaft cams quickly wore out;
  • Even in 16-valve engines, the chain between the camshafts is often extended;
  • The turbine of the first generation engines often fails due to clogging of its filter;
  • Second-generation 8-valve engines are more reliable and have virtually no weak points;
  • Also here are the typical problems of diesel engines with a particulate filter and EGR.

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