The 1.7-liter Hyundai D4FD or 1.7 CRDi diesel engine was produced from 2010 to 2019 and installed in popular models of the group, such as ix35, i40, Optima, Tucson, and Sportage. There are two versions of this engine: one compliant with Euro 5 emission standards and an updated version compliant with Euro 6 standards. The Hyundai U series also includes engines with the following indices: D3FA, D4FA, D4FB, D4FC, and D4FE.
| Typ | row |
| Number of cylinders | 4 |
| number of valves | 16 |
| Exact capacity | 1685 cm³ |
| Cylinder diameter | 77.2 mm |
| Piston stroke. | 90 mm |
| Power system | Common Rail |
| Power | 116 - 136 HP |
| Torque | 260 - 330 nm |
| Compression ratio | 17.0 |
| Fuel type | diesel |
| Environmental class | EURO 5 |
| Typ | row |
| Number of cylinders | 4 |
| number of valves | 16 |
| Exact capacity | 1685 cm³ |
| Cylinder diameter | 77.2 mm |
| Piston stroke. | 90 mm |
| Power system | Common Rail |
| Power | 116 - 141 HP |
| Torque | 280 - 340 nm |
| Compression ratio | 15.7 |
| Fuel type | diesel |
| Environmental class | EURO 6 |
| City | 7.8 litry |
| Route | 5.0 litry |
| Mixed | 6.0 litry |
The weight of the D4FD engine according to the catalog is 167.7 kg. The engine number D4FD is located at the junction of the engine and the transmission. The main problem for the owner is the rapid contamination of the intake manifold, equipped with swirl flaps. It has to be cleaned every 50,000 km. The flap drive regularly comes off the hinges and they simply stop working. The fuel system of this power unit, CR Bosch, is highly reliable, but only if you don't pour anything into the tank and especially when it comes to Euro 6 diesel versions. Complaints are often only about the failure of the fuel pressure regulator and the lift pump. All versions of this engine are equipped with a soot filter, which can cause trouble. An increase in oil level indicates a failure of its regeneration and means that it is already clogged. Quite often, fuel can get into the oil due to a worn out seal of the injection pump. The timing chains of all U-series diesels do not have a long lifespan and stretch up to 100,000 km, but for the 1.7-liter engine, they last longer and are usually replaced at 200,000 km. It is worth noting that with excessive stretching, the chain can skip and bend the valves. Among other complaints on forums, it is worth mentioning the relatively frequent lubricant leaks. It is also necessary to regularly clean the EGR valve and the throttle valve.
| i40 1 (VF) | 2011 - 2018 |
| ix35 1 (LM) | 2010 - 2015 |
| Sonata 7 (LF) | 2015 - 2019 |
| Tucson 3 (TL) | 2015 - 2018 |
| Optima 3 (TF) | 2012 - 2015 |
| Optima 4 (JF) | 2015 - 2018 |
| Sportage 3 (SL) | 2010 - 2016 |
| Sportage 4 (QL) | 2015 - 2018 |
| Carens 4 (RP) | 2013 - 2018 |
2.0-liter diesel engine Hyundai D4EA or Santa Fe Classic 2.0 CRDi was produced from 2001 to 2012 and installed in almost all mid-size models of the company at that time. This engine was developed by VM Motori and is known on GM Korea models as Z20S. The D family also includes diesel engines: D3EA and D4EB.
The 2.2-liter Hyundai-Kia D4HE or Smartstream D 2.2 CRDi engine has been produced since 2020 and is installed in popular crossover models such as Sorento, Santa Fe, and minivan Carnival. This is the new generation of diesel engines from this company with an aluminum block and a timing belt. The R family also includes diesel engines: D4HA, D4HB, D4HC, D4HD, and D4HF.
The 3.0-liter Hyundai D6EA or 3.0 CRDi diesel engine was produced from 2006 to 2011 and was installed in two of the company's largest models: the Mohave SUV and the ix55 crossover. The diesel engine is considered a proprietary development of the corporation and is available in Euro 3 or Euro 4 versions. The Hyundai S series also includes the D6EB engine.
The 1.5-liter Hyundai D4FA or 1.5 CRDi diesel engine was produced from 2005 to 2011 and installed in popular models such as Accent, Rio, Matrix, Getz, and Cerato. In addition to the standard version of this engine, there were also variants with reduced power. The Hyundai U series also includes engines with the following designations: D3FA, D4FB, D4FC, D4FD, and D4FE.
The 2.2-liter diesel engine Peugeot DW12MTED4 or DW12M was installed from 2007 to 2013 and used in the Mitsubishi Outlander SUV and its twin models, such as the Peugeot 4007 and Citroen C-Crosser. This engine was available in two versions: 4HN compliant with Euro 4 emission standards and 4HK compliant with Euro 5 emission standards. The DW12 engine range includes: DW12TED4, DW12BTED4, DW12CTED4, and DW12UTED.
The 1.8-liter V6 Mitsubishi 6A11 gasoline engine was produced in Japan from 1992 to 2000 and installed in the sixth generation of the popular Lancer model and the seventh generation of the Galant. This powertrain is very rare and is a true exclusive model. The 6A1 family also includes engines: - 6A10, - 6A12, - 6A12TT, - 6A13, and - 6A13TT.