Engine Hyundai-Kia D4HD

The 2.0-liter Hyundai D4HD or Smartstream D 2.0 TCi engine has been produced since 2020 and is installed on the popular Tucson crossovers in the NX4 body, as well as the Sportage in the NQ5 body. This is a new generation of concern diesel units with an aluminum block and a timing belt.

The R family also includes diesels: D4HA, D4HB, D4HC, D4HE and D4HF.

The engine was installed on:

  • Hyundai Tucson 4 (NX4) since 2020;
  • Kia Sportage 5 (NQ5) since 2020.


Production years since 2020
Displacement, cc 1998
Fuel system Common Rail
Power output, hp 186
Torque output, Nm 417
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 83
Piston stroke, mm 92.3
Compression ratio 16.0
Features SCR
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging BorgWarner
Recommended engine oil 5W-30
Engine oil capacity, liter 5.6
Fuel type diesel
Euro standards EURO 5/6
Fuel consumption, L/100 km (for Hyundai Tucson 2022)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 194.5

Disadvantages of the Hyundai D4HD engine

  • This diesel engine has appeared recently and all the malfunctions described below are still rare;
  • On specialized forums, oil consumption from the first km of run is most often discussed;
  • Owners also often complain about the rapid drop in coolant levels;
  • A sophisticated SCR type exhaust cleaning system with AdBlue injection is also used;
  • Otherwise, the resource of the new aluminum block and timing belt drive is interesting.

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