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.
Specifications
| 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 |
7.7 5.4 6.3 |
| 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.
