Engine Hyundai-Kia G4ND

Hyundai’s 2.0-liter G4ND engine added to the Nu powertrain family in 2011 and gained ground with the third and fourth generation Optima. The highlight of the motor is the CVVL valve lift system.

In 2011, the Nu range introduced a 2.0-liter unit equipped with a CVVL system that continuously changes valve stroke depending on engine speed. Otherwise, this is a conventional engine with distributed fuel injection, an aluminum block and cast-iron liners, an aluminum 16-valve cylinder head with hydraulic lifters, a timing chain, a phase control system on two shafts, and an intake manifold with variable geometry VIS.

In 2014 they introduced small plastic separators in the engine cooling jacket to slightly increase the movement of antifreeze in the top and most stressed part of the cylinders, and in 2017 they finally added the long-awaited piston cooling oil jets and scuffing problems, if not completely gone, have become much meet less frequently.

Nu family: G4NB, G4NA, G4NC, G4ND, G4NE, G4NH, G4NG, G4NL, G4NN, G4NJ, G4NM, G4NS, G4NR.

Specifications

Production years	since 2011
Displacement, cc	1999
Fuel system	distributed injection
Power output, hp	150 – 172
Torque output, Nm	195 – 205
Cylinder block	aluminum R4
Block head	aluminum 16v
Cylinder bore, mm	81
Piston stroke, mm	97
Compression ratio	10.3
Features	VIS
Hydraulic lifters	yes
Timing drive	chain
Phase regulator	yes
Turbocharging	no
Recommended engine oil	5W-20, 5W-30
Engine oil capacity, liter	4.8
Fuel type	petrol
Euro standards	EURO 5/6
Fuel consumption, L/100 km (for Kia Optima 2014) — city — highway — combined	10.3 6.1 7.6
Engine lifespan, km	~300 000
Weight, kg	124

The engine was installed on:

• Hyundai Elantra 5 (MD) in 2013 – 2015;
• Hyundai i40 1 (VF) in 2011 – 2019;
• Hyundai ix35 1 (LM) in 2013 – 2015;
• Hyundai Sonata 6 (YF) in 2012 – 2014, Sonata 7 (LF) in 2014 – 2019;
• Hyundai Tucson 3 (TL) in 2015 – 2020;
• Kia Carens 4 (RP) in 2013 – 2018;
• Kia Cerato 3 (YD) in 2012 – 2018;
• Kia Optima 3 (TF) in 2012 – 2016, Optima 4 (JF) in 2015 – 2020;
• Kia Sportage 3 (SL) in 2013 – 2016, Sportage 4 (QL) in 2015 – 2020;
• Kia Soul 2 (PS) in 2013 – 2019.

Disadvantages of the Hyundai G4ND engine

• The main complaints of the owners of these engines are caused by the appearance of scuffing in the cylinders, which are formed due to the ingress of catalyst crumbs straight into the combustion chamber. In 2017, piston oil cooling nozzles appeared and the problem disappeared.
• Oil consumption is manifested not only due to scoring, but also after the occurrence of piston rings, which are very narrow here and quickly coke. But most often the reason is in the design of the engine: with an open cooling jacket, thin cast-iron liners can easily go elliptical.
• With not very active operation of the machine without sudden acceleration and frequent slipping, the timing chain has a decent resource and can easily go 200 – 300 thousand km without replacement. However, for too hot owners, it often stretches to 150,000 km.
• It cannot be said that the CVVL valve lift system is not very reliable, but it is often ruined by aluminum chips, which appear as a result of scoring and are carried through the lubrication system.
• In specialized forums, they often complain about oil and coolant leaks due to weak gaskets, and the water pump and attachments are also distinguished by a low resource. On the units of the first years of production, there were weak liners and there were cases of their cranking.

Frequently asked questions about the Hyundai-Kia G4ND