2018 HYUNDAI Sonata G4KJ/G4KF (LF)

LF / Sedan / Global (primarily North America, South Korea, select Asian and Middle Eastern markets)

G4KJG4KFT-GDI 2.0LRegistro exacto de año/versiónSilver

Engine identity

Engine code

G4KJ, G4KF, T-GDI 2.0L

Engine summary

Multiple engines offered globally including 2.4L naturally aspirated inline-4 (G4KJ), 2.0L turbocharged inline-4 (G4KF/T-GDI), and 2.0L diesel in select markets.

Displacement

2359 cc (2.4L), 1999 cc (2.0L turbo)

Power

185 hp @ 6300 rpm (2.4L NA), up to 245 hp @ 6200 rpm (2.0L turbo)

Torque

241 Nm (2.4L NA), 353 Nm (2.0L turbo)

Fuel system

Multi-point fuel injection (2.4L), Direct injection turbo (2.0L)

Timing drive

Timing chain

Puerto OBD

Verify by VIN and market

Oils and fluids

Tipo de aceite

SAE 5W-30 API SN or higher synthetic

Capacidad de aceite

Approx. 4.0L with filter (service-fill integrated engine oil capacity, includes oil filter)

Refrigerante

Approx. 6.5L (engine and radiator combined)

Fluido

Hyundai SP-IV or equivalent transmission fluid

Differential fluid

0W-30 synthetic gear oil (rear differential where applicable)

Líquido de frenos

DOT 4 synthetic

Service and parts data

Manual transmission

6-speed manual (limited markets)

Automatic transmission

6-speed automatic, 8-speed automatic (select markets)

Spark plugs

Iridium type recommended; replace every 100,000 km or per schedule

Service interval

Every 10,000 - 15,000 km or 12 months, whichever comes first

Medidas de neumáticos

215/55R17, 245/45R18 (turbo models)

Torque de rueda

Verify by VIN and market

Common and chronic problems

Valve cover gasket leaks
Turbocharger wastegate rattling (2.0T models)

First checks

Check timing chain for noise after 150,000 km
Inspect turbocharger performance and intercooler hoses

Antes de cambiar piezas

Save fault codes and freeze-frame data before clearing anything.
Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

Market variations exist; US and Korea received mostly 2.4L NA and 2.0L turbo petrol engines, Europe offered diesel variants not covered here.
Engine oil capacity and recommendations vary slightly by engine code; refer to owner's manual for exact figures.

Códigos comunes

Source and verification notes

Hyundai 2018 Sonata Owner's Manual and Service Guide
Global automotive databases and verified Hyundai technical bulletins 2017-2018

Herramientas compatibles

Verify by VIN and market

Preguntas frecuentes

What engine code does the 2018 HYUNDAI Sonata G4KJ/G4KF (LF) use? 2018 HYUNDAI Sonata G4KJ/G4KF (LF) is listed here with engine code G4KJ, G4KF, T-GDI 2.0L; engine summary: Multiple engines offered globally including 2.4L naturally aspirated inline-4 (G4KJ), 2.0L turbocharged inline-4 (G4KF/T-GDI), and 2.0L diesel in select markets..
What oil and capacity does the 2018 HYUNDAI Sonata G4KJ/G4KF (LF) use? 2018 HYUNDAI Sonata G4KJ/G4KF (LF) is listed with SAE 5W-30 API SN or higher synthetic and oil capacity Approx. 4.0L with filter (service-fill integrated engine oil capacity, includes oil filter). Confirm market and engine option before service.
What are common 2018 HYUNDAI Sonata G4KJ/G4KF (LF) problems? Highlighted checks for 2018 HYUNDAI Sonata G4KJ/G4KF (LF): Valve cover gasket leaks, Turbocharger wastegate rattling (2.0T models).

Engine identity

Engine code

G4KJ, G4KF, T-GDI 2.0L

Engine summary

Multiple engines offered globally including 2.4L naturally aspirated inline-4 (G4KJ), 2.0L turbocharged inline-4 (G4KF/T-GDI), and 2.0L diesel in select markets.

Displacement

2359 cc (2.4L), 1999 cc (2.0L turbo)

Power

185 hp @ 6300 rpm (2.4L NA), up to 245 hp @ 6200 rpm (2.0L turbo)

Torque

241 Nm (2.4L NA), 353 Nm (2.0L turbo)

Fuel system

Multi-point fuel injection (2.4L), Direct injection turbo (2.0L)

Timing drive

Timing chain

Puerto OBD

Verify by VIN and market

Oils and fluids

Tipo de aceite

SAE 5W-30 API SN or higher synthetic

Capacidad de aceite

Approx. 4.0L with filter (service-fill integrated engine oil capacity, includes oil filter)

Refrigerante

Approx. 6.5L (engine and radiator combined)

Fluido

Hyundai SP-IV or equivalent transmission fluid

Differential fluid

0W-30 synthetic gear oil (rear differential where applicable)

Líquido de frenos

DOT 4 synthetic

Service and parts data

Manual transmission

6-speed manual (limited markets)

Automatic transmission

6-speed automatic, 8-speed automatic (select markets)

Spark plugs

Iridium type recommended; replace every 100,000 km or per schedule

Service interval

Every 10,000 - 15,000 km or 12 months, whichever comes first

Medidas de neumáticos

215/55R17, 245/45R18 (turbo models)

Torque de rueda

Verify by VIN and market

Preguntas frecuentes

What engine code does the 2018 HYUNDAI Sonata G4KJ/G4KF (LF) use? 2018 HYUNDAI Sonata G4KJ/G4KF (LF) is listed here with engine code G4KJ, G4KF, T-GDI 2.0L; engine summary: Multiple engines offered globally including 2.4L naturally aspirated inline-4 (G4KJ), 2.0L turbocharged inline-4 (G4KF/T-GDI), and 2.0L diesel in select markets..

What oil and capacity does the 2018 HYUNDAI Sonata G4KJ/G4KF (LF) use? 2018 HYUNDAI Sonata G4KJ/G4KF (LF) is listed with SAE 5W-30 API SN or higher synthetic and oil capacity Approx. 4.0L with filter (service-fill integrated engine oil capacity, includes oil filter). Confirm market and engine option before service.

What are common 2018 HYUNDAI Sonata G4KJ/G4KF (LF) problems? Highlighted checks for 2018 HYUNDAI Sonata G4KJ/G4KF (LF): Valve cover gasket leaks, Turbocharger wastegate rattling (2.0T models).

2018 HYUNDAI Sonata G4KJ/G4KF (LF)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Antes de cambiar piezas

Important notes

Scanning Engine...

2018 HYUNDAI Sonata G4KJ/G4KF (LF)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Antes de cambiar piezas

Important notes