The Hyundai Smartstream is a gasoline and diesel automobile engine branding used by Hyundai since 2018. An all-aluminum engine of Hyundai Motor Company debuted in the third-generation Hyundai i30 hatchback (codenamed PD), which was unveiled in 2018 at the Paris Motor Show.

Gasoline engines

Smartstream G1.0 (G3LD) The Smartstream G1.0 MPI is a naturally aspirated inline 3-cylinder engine with multi-port injection (MPi); the engine makes at 6,200 rpm and of torque at 3,750 rpm.

Compared to the Kappa II 1.0 MPi predecessor, improvements include using dual port injectors for each cylinder and replacing the thermostat with an integrated temperature controlled valve (ITM).

Applications Hyundai Casper (AX1) (2021–present) Hyundai i10 (AC3) (2020–present) Kia Picanto/Morning (JA) (2020–present)

Smartstream G1.0T (G3LE/G3LF) The Smartstream G1.0 T-GDI (G3LE) is a turbocharged inline 3-cylinder engine with gasoline direct injection (GDi); the engine makes at 6,000 rpm and of torque between 1,500 and 4,000 rpm. A detuned version with between 4,500 and 6,000 rpm is also available for some applications.

The Smartstream G1.0 T-GDI (G3LF) adds CVVD and mild hybrid support to the G3LE engine.

Applications Hyundai Bayon (BC3 CUV) (2021–present) Hyundai i10 (AC3) (2020–present) Hyundai i20 (BC3) (2020–present) Hyundai i30 (PD) (2020–present) Hyundai Kona (OS) (2020–2023) Hyundai Kona (SX2) (2023–present) Kia Ceed (CD) (2020–present) Kia K4 (2025–present) Kia Picanto (JA) (2020–present) Kia Stonic (YB CUV) (2020–present) Kia Syros (AY) (2025–present)

Smartstream G1.2 (G4LF) The Smartstream G1.2 MPI is a naturally aspirated inline 4-cylinder engine with MPi; the engine makes at 6,300 rpm and of torque at 4,200 rpm.

Compared to the Kappa II 1.2 MPi predecessor, improvements include using dual port injectors for each cylinder and replacing the thermostat with an integrated temperature controlled valve (ITM).

Applications Hyundai Bayon (BC3 CUV) (2021–present) Hyundai Exter (AI3 CUV) (2023–present) Hyundai i20 (BC3) (2020–present) Kia Picanto (JA) (2020–present) Kia Rio (YB) (2020–present) Kia Sonet (QY) (2020–present) Kia Stonic (YB CUV) (2020–present)

Smartstream G1.4T (G4LD) The Smartstream G1.4 T-GDI is a turbocharged inline 4-cylinder engine with GDi; the engine makes at 6,000 rpm and of torque between 1,500 and 3,200 rpm.

Applications Hyundai Elantra (CN7) (2020–present) Hyundai Creta (SU2i) (2020-2023) Kia Carens (KY) (2022–present) Kia Seltos (SP2i) (2019–2023)

Smartstream G1.5 (G4FL/G4LG)

The Smartstream G1.5 MPi (G4FL) is a naturally aspirated inline 4-cylinder engine that carries a bore and stroke of 75.6 mm and 83.4 mm respectively and a 10.5:1 compression ratio; it makes at 6,300 rpm and of torque at 4,500 rpm. Developed from the Gamma family, it is also marketed as the 1.5 Smartstream Gamma II engine.

The Smartstream G1.5 DPi (G4LG) is a naturally aspirated inline 4-cylinder engine with both GDi and MPi from the Kappa family; it makes at 6,000 rpm and of torque at 3,500 rpm. It is produced by Kia Slovakia in Žilina.

Applications (G4FL) Hyundai Accent/Verna (HCi) (2020–present) Hyundai Creta/ix25 (SU2c/SU2i/SU2id) (2019–present) Hyundai Elantra (CN7) (2020–present) Hyundai Elantra (AD) (China only; 2016–2021) Hyundai Stargazer (KS) (2022–present) Hyundai Verna (BN7) (2023–present) Kia Carens (KY) (2022–present) Kia K3 (BD) (2018–present) Kia Seltos/KX3 (SP2i/SP2c) (2019–present) Kia Sonet (QY) (2020–present)

Applications (G4LG) Hyundai i30 (PD) (2020–present)

Smartstream G1.5T (G4LH/G4LK/G4FS)

The Smartstream G1.5 T-GDI (G4LH) is a turbocharged inline 4-cylinder engine with GDi from the Kappa family that carries a bore and stroke of 71.6 mm and 92 mm respectively and a 10.5:1 compression ratio; it makes at 5,500 rpm and of torque between 1,500 and 3,000 rpm. It is produced by Kia Slovakia in Žilina.

The Smartstream G1.5 T-GDI (G4LK) adds CVVD and mild hybrid support to the G4LH engine.

The Smartstream G1.5 T-GDI (G4FS) is a turbocharged inline 4-cylinder engine with GDi that carries a bore and stroke of 75.6 mm and 83.4 mm respectively and a 10.5:1 compression ratio; it makes at 5,500 rpm and of torque between 1,500 and 4,000 rpm. A high output version that makes at 6,000 rpm and of torque between 2,200 and 4,000 rpm is also available for some applications. The engine is based on the Smartstream G1.5 MPi (G4FL) engine from the Gamma family, and mainly used in the Chinese market.

Applications (G4LH) Hyundai Alcazar (SU2 LWB) (2023–present) Hyundai Creta (SU2i) (2024–present) Hyundai i30 (PD) (2020–present) Hyundai Verna (BN7) (2023–present) Kia Ceed (CD) (2020–present) Kia Carens (KY) (2023–present) Kia Seltos (SP2i) (2023–present)

Applications (G4FS) Hyundai Custo/Custin (KU) (2021–present) Hyundai Lafesta N-Line (SQ) (2022–present) Hyundai Mistra (DU2) (2020–present) Hyundai Sonata (DN8) (2020–present) Hyundai Tucson (NX4) (2021–present) Kia K5 (DL3) (2020–present) Kia Sportage Ace (NP) (2021–present)

Smartstream G1.6 (G4FM) The Smartstream G1.6 MPi (G4FM) is a engine with 11.2:1 compression ratio, the engine makes at 6,300 rpm and of torque at 4,500 rpm.

The Smartstream G1.6 DPi makes at 6,300 rpm and of torque at 4,500 rpm.

It features technologies such as CVVT (Continuously Variable Valve Timing), DPFI (Dual-Port Fuel Injection), HTCS (High Tumble Combustion System), ITMS (Integrated Thermal Management System).

Applications (MPi)

Hyundai Elantra (AD) (2018–2020) Hyundai Elantra (CN7) (2020–present) Hyundai Venue (QX) (2019–present) Kia Forte/Cerato/K3 (BD) (2018–present) Kia K3 (BL7) (2023–present)

Applications (DPi)

Hyundai Accent/Verna (HC) (2019–2022) Hyundai Venue (QX) (2019–present)

Smartstream G1.6T (G4FP (G4FV Hyundai i20N))

The Smartstream G1.6 T-GDI replaced the 1.6 Gamma T-GDI engine. It is a turbocharged inline 4-cylinder engine with GDi that carries a bore and stroke of 75.6 mm and 89 mm respectively and a 10.0(±0.2):1 compression ratio. This is the world's first production engine to use Continuously Variable Valve Duration (CVVD) technology, allowing it to adjust how long its intake valves remain open independently of timing and lift. Hyundai claims a 4% increase in performance, 5% increase in efficiency, and a 12% decrease in tailpipe emissions due to this technology.

The engine makes at 5,500 rpm with of torque between 1,500 and 4,500 rpm. Higher output versions that makes at 6,000 rpm with of torque between 1,600 and 4,500 rpm or at 6,000 rpm with of torque between 1,500 and 4,500 rpm are also available depending on application.

Applications

Hyundai Elantra (CN7) (2020–present) Hyundai Kona (OS) (2020–2023) Hyundai Kona (SX2) (2023–present) Hyundai Sonata (DN8) (2019–present) Hyundai Tucson (NX4) (2020–present) Hyundai i20 N (BC3) (2021–present) Kia K4 (2025–present) Kia K5 (DL3) (2019–present) Kia Seltos (SP2) (2022–present) Kia Sportage (NQ5) (2021–present)

Smartstream G2.0 (G4NJ/G4NL/G4NM/G4NS) The Smartstream G2.0 MPi (G4NJ/G4NL) is an inline 4-cylinder engine with MPi and a 10.3:1 compression ratio; the engine makes at 6,200 rpm and of torque at 4,000 rpm. It is an update of the Hyundai Nu Engine

The Smartstream G2.0 MPi CVVL (G4NM) adds CVVL to the G2.0 MPi engine; the engine makes at 6,500 rpm and of torque at 4,800 rpm.

The Smartstream G2.0 MPi Atkinson Cycle (G4NS) is an inline 4-cylinder engine with MPi and a 12.5:1 compression ratio; the engine makes at 6,200 rpm and of torque at 4,500 rpm.

Applications (G4NJ/G4NL) Hyundai Alcazar (SU2 LWB) (2021–present) Hyundai Creta (SU2b) (2021–present) Hyundai Elantra (CN7) (2020–present) Hyundai Sonata (DN8) (2019–present) Hyundai Tucson (NX4) (2021–present) Kia K5 (DL3) (2019–present) Kia Sportage (NQ5) (2021–present)

Applications (G4NM) Hyundai Mufasa (NU2) (2023–present) Hyundai Sonata (DN8) (2019–present) Kia K5 (DL3) (2019–present)

Applications (G4NS) Hyundai Elantra (CN7) (2020–present) Hyundai Kona (OS) (2020–2023) Hyundai Kona (SX2) (2023–present)

Smartstream G2.0T (G4NN) The Smartstream G2.0 T-GDi is a turbocharged inline 4-cylinder engine with GDi; the engine makes at 6,000 rpm and of torque between 1,500 and 4,000–4,500 rpm. It is built by Hyundai Wia Shandong.

Applications Hyundai Custo/Custin (KU) (2021–present) Hyundai Santa Fe (TM) (2020–2024) Hyundai Santa Fe (MX5) (2024–present) Hyundai Sonata (DN8) (2019–present) Kia Carnival (KA4) (2021–present) Kia K5 (DL3) (2020–present) Kia Sportage (NQ5) (2021–present)

Smartstream G2.5 (G4KM/G4KN) Comes in two versions, 2.5 MPi (G4KM) and 2.5 GDi (G4KN), Bore is with a stroke.

The Smartstream G2.5 MPi is an inline 4-cylinder engine with multi-port injection and a 10.5:1 compression ratio; the engine makes at 6,000 rpm and of torque at 4,000 rpm.

The Smartstream G2.5 GDi is an inline 4-cylinder engine with both direct and multi-port injection and a 13.0:1 compression ratio; the engine makes at 6,100 rpm and of torque at 4,000 rpm in the Sonata, for the Azera and Cadenza the engine makes at 6,100 rpm and of torque at 4,000 rpm.

Applications (G4KM) Hyundai Santa Fe (TM) (2020–present) Hyundai Sonata (DN8) (2019–present) Kia Sorento (MQ4) (2020–present)

Applications (G4KN) Hyundai Grandeur/Azera (IG) (2019–2022) Hyundai Grandeur/Azera (GN7) (2022–present) Hyundai Santa Cruz (2021–present) Hyundai Santa Fe (TM) (2020–2023) Hyundai Santa Fe (MX5) (2023–present) Hyundai Sonata (DN8) (2019–present) Hyundai Tucson (NX4) (2020–present) Kia K5 (DL3) (2019–present) Kia K8 (GL3) (2021–present) Kia Sorento (MQ4) (2020–present) Kia Sportage (NQ5) (2021–present)

Smartstream G2.5T (G4KP)

The Smartstream G2.5 T-GDi is a turbocharged inline 4-cylinder engine with both GDi and MPi for FWD applications, the engine makes at 6,000 rpm and of torque between 1,750 and 4,000 rpm for SUV applications with a 10.0:1 compression ratio while it makes at 5,800 rpm and of torque between 1,650 and 4,000 rpm for other applications with a 10.5:1 compression ratio.

Applications

Hyundai Palisade (LX3) (2024–present) Hyundai Santa Cruz (2021–present) Hyundai Santa Fe (TM) (2020–2023) Hyundai Santa Fe (MX5) (2023–present) Hyundai Sonata (DN8) (2020–present) Kia K5 (DL3) (2020–present) Kia Sorento (MQ4) (2020–present) Kia Telluride (LQ2) (2026–present)

Smartstream FR G2.5T (G4KR) The Smartstream G2.5 FR T-GDi. is a turbocharged inline 4-cylinder engine for RWD applications with both GDi and MPi and a 10.5:1 compression ratio; the engine makes at 6,000 rpm and of torque between 1,650 and 4,000 rpm. A detuned version with at 5,800 rpm is used for the Kia Tasman.

Applications

Genesis G70 (IK) (2023–present) Genesis G80 (RG3) (2020–present) Genesis GV70 (JK1) (2020–present) Genesis GV80 (JX1) (2020–present) Kia Stinger (CK) (2020–2023) Kia Tasman (TK) (2025-present)

Smartstream G3.5 (G6DT/G6DU) The Smartstream G3.5 is a V6 for FWD based applications. Bore is with a stroke.

The Smartstream G3.5 GDi (G6DT) compression ratio is 12.3:1 and makes at 6,400 rpm and of torque at 5,200 rpm, for the Kia K8 application it makes at 6,400 rpm and of torque at 5,000 rpm.

The Smartstream G3.5 MPi (G6DU) makes at 6,400 rpm and of torque at 5,000 rpm.

Applications (G6DT) Hyundai Grandeur/Azera (GN7) (2022–present) Hyundai Palisade (LX3) (2025–present) Kia Carnival (KA4) (2020–present) Kia K8 (GL3) (2021–present)

Applications (G6DU) Hyundai Santa Fe (TM) (2020–present) Hyundai Staria (US4) (2021–present) Kia Carnival (KA4) (2020–present) Kia Sorento (MQ4) (2020–present)

Smartstream FR G3.5T (G6DS)

The Smartstream G3.5 FR T-GDI is a twin turbocharged 6-cylinder engine for RWD applications with an 11.0:1 compression ratio; the engine makes at 6,000 rpm and of torque between 1,300 and 4,500 rpm.