Suzuki K engine

The Suzuki K engine family is a series of automobile engines from Suzuki, introduced in 1994. Displacements range from 0.7 L to 1.5 L. All engines have aluminium cylinder blocks with three or four cylinders in-line. Cylinder heads have two overhead camshafts, driven by chain, and four valves per cylinder. Fuel is gasoline/petrol, metered by multipoint fuel injection or direct injection. Some variants are turbocharged.

Since 2013, some of the K engines range have been upgraded with Dualjet technology. The upgrades include new two injectors per cylinder, increased compression ratio (improving the thermal efficiency), redesigned water jacket shape, piston cooling by oil jets, water-cooled EGR system and several other changes for fuel efficiency. The turbocharged variant with direct injection fuel system is called Boosterjet.

Furthermore, a mild hybrid technology with 12 or 48-volt Integrated Motor Generator (ISG) dubbed as Smart Hybrid Vehicle by Suzuki (SHVS) is available for markets with stricter emission regulation, such as Europe, Japan, Singapore and India. This mild hybrid technology helps to increase fuel mileage, providing optional acceleration and also reduces emissions. A strong hybrid variant with Motor Generator Unit (MGU) is available in Europe and Japan.

K6A
This is the first K engine that appeared in 1994 and was discontinued in 2018. It is the smallest in the family and also the first K engine with VVT. This engine was available in several versions, such as naturally aspirated, turbocharged, lean-burn, CNG and strong hybrid. The hybrid version was also the first hybrid engine in the kei car class and only available for Suzuki Twin.

Technical specifications:
 * Displacement: 658 cc
 * Bore and stroke: 68 mm x 60.4 mm
 * Valvetrain: DOHC, 12-valve, with or without VVT
 * Compression ratio: 8.4–8.9 (turbo), 10.5 (NA)
 * Maximum power:
 * 37-54 PS at 5500–6500 rpm (NA)
 * 60-64 PS at 6000–6500rpm (turbo)
 * 50 PS at 6500 rpm (CNG)
 * Maximum torque:
 * 55-63 N.m at 3500–4000 rpm (NA)
 * 83-108 N.m at 3000–3500rpm (turbo)
 * 58 N.m at 3500 rpm (CNG)

Applications:


 * Naturally aspirated
 * 1995–2018 Suzuki Jimny
 * 1997–2012 Suzuki Wagon R/Mazda AZ-Wagon
 * 1998–2008 Suzuki Kei
 * 1998–2014 Suzuki Alto
 * 1998–2014 Mazda Carol
 * 1999–2006 Mazda Laputa
 * 2001–2011 Suzuki MR Wagon/Nissan Moco
 * 2001–2013 Suzuki Carry/Every
 * 2001–2013 Mazda Scrum Truck
 * 2002–2008 Mazda Spiano
 * 2002–2015 Suzuki Alto Lapin
 * 2003–2005 Suzuki Twin
 * 2004–2009 Arctic Cat T660
 * 2006–2009 Suzuki Cervo
 * 2008–2013 Suzuki Palette
 * 2009–2013 Nissan Roox
 * 2010–2010 Nissan Pino
 * 2012–2013 Mazda Flair Wagon


 * Turbocharged
 * 1994–1998 Suzuki Alto
 * 1995–1998 Suzuki Cappuccino
 * 1995–2018 Suzuki Jimny
 * 1997–2012 Suzuki Wagon R/Mazda AZ-Wagon
 * 1998–2008 Suzuki Kei
 * 1998–2008 Mazda AZ-Offroad
 * 1999–2006 Mazda Laputa
 * 2001–2011 Suzuki MR Wagon/Nissan Moco
 * 2001–2013 Suzuki Every/Mazda Scrum Van
 * 2002–2008 Mazda Spiano
 * 2002–2015 Suzuki Alto Lapin
 * 2004–2009 Arctic Cat T660 Turbo (110 hp)
 * 2006–2009 Suzuki Cervo
 * 2008–2013 Suzuki Palette
 * 2009–2013 Nissan Roox
 * 2012–2013 Mazda Flair Wagon
 * 2013–2017 Caterham 7 160/165 (80 hp)

K10B
The three-cylinder 1.0-litre version of K engine, fitted in many Suzuki's city cars since 2008. In 2014, this engine was reworked by increasing the compression ratio from 10.0 to 11.0:1 and known as K-Next. This changes claimed to increase the petrol mileage over 23km/L, achieved maximum power on lower rev and reduced frictional losses. CNG variant also available for Indian domestic market.

Technical specifications:
 * Displacement: 996 cc
 * Bore and stroke: 73 mm x 79.4 mm
 * Valvetrain: DOHC, 12-valve
 * Compression ratio: 10.0–11.0
 * Maximum power:
 * 65-68 PS at 6000 rpm
 * 59 PS at 6000 rpm (CNG)
 * Maximum torque:
 * 90 Nm at 3500 rpm
 * 78 Nm at 3500 rpm (CNG)

Applications:
 * 2008–2014 Suzuki Splash
 * 2008–2014 Opel/Vauxhall Agila ecoFLEX
 * 2009–2014 Suzuki Alto/A-Star/Nissan Pixo
 * 2009–2014 Maruti Suzuki Estilo/Karimun Estilo (India & Indonesia)
 * 2010–present Suzuki Wagon R (India[2010-2022], Pakistan & Sri Lanka)
 * 2010–2020 Suzuki Alto K10
 * 2013–2021 Suzuki Karimun Wagon R (Indonesia)
 * 2014–present Suzuki Celerio/Cultus (India [2014-2021])
 * 2019–2022 Suzuki S-Presso

K10C
Reworked version of K10B engine with naturally aspirated Dualjet or turbocharged direct injection Boosterjet technology. The compression ratio was increased from 11.0:1 to 12.0:1 for more thermal efficiency and reduced frictional losses. Suzuki's SHVS mild hybrid system is available for this engine in European and Japanese market. The CNG version is also available for Indian market.

Technical specifications:
 * Displacement: 998 cc
 * Bore and stroke: 73 mm x 79.4 mm
 * Valvetrain: DOHC, 12-valve, Single or Dual VVT
 * Compression ratio: 10.0 (turbo), 12.0 (NA)
 * Maximum power:
 * 65-68 PS at 5500–6000 rpm (NA)
 * 57 PS at 5300 rpm (CNG)
 * 3 PS at 1000 rpm (electric motor)
 * 99-111 PS at 5500 rpm (turbo)
 * Maximum torque:
 * 89–93 N.m at 3500 rpm (NA)
 * 82 N.m at 3400 rpm (CNG)
 * 150-170 N.m at 1500–4500 rpm (turbo)
 * 50 N.m at 100 rpm (electric motor)

Applications:
 * Naturally aspirated
 * 2015–present Suzuki Celerio
 * 2022–present (Maruti) Suzuki Wagon R
 * 2022–present (Maruti) Suzuki Alto K10
 * 2022–present Suzuki S-Presso


 * Turbocharged
 * 2015–2022 Suzuki Baleno
 * 2016–2021 Suzuki SX4 S-Cross (Europe)
 * 2017–present Suzuki Swift
 * 2017–present Suzuki Xbee
 * 2018–2021 Suzuki Vitara (Europe)
 * 2023–present Suzuki Fronx/2024–present Toyota Taisor

K10A
The smallest four-cylinder K-series engine.

Technical specifications:
 * Displacement: 996 cc
 * Bore and stroke: 68 mm x 68.6 mm
 * Valvetrain: DOHC, 16-valve, with or without VVT
 * Compression ratio: 8.4 (turbo), 10.0 (NA)
 * Maximum power:
 * 65-70 PS at 6500–7000 rpm (NA)
 * 100 PS at 6500 rpm (turbo)
 * Maximum torque:
 * 88 N.m at 3500 rpm (NA)
 * 118 N.m at 4000 rpm (turbo)

Applications:
 * Naturally aspirated
 * 1997–2002 Suzuki Wagon R+
 * 1999–2001 Chevrolet Wagon R+ (Colombia/Ecuador)
 * 1999–2003 Chevrolet Alto (Colombia/Ecuador)
 * 2000–2002 Chevrolet MW (Japan)


 * Turbocharged
 * 1997–2000 Suzuki Wagon R+ (Japan)
 * 2000–2002 Chevrolet MW (Japan)

K12A
Technical specifications:
 * Displacement: 1172 cc
 * Bore and stroke: 71 mm x 74 mm
 * Valvetrain: DOHC, 16-valve
 * Compression ratio: 9.3
 * Maximum power:
 * 69 PS at 6000 rpm
 * Maximum torque:
 * 95 N.m at 3250 rpm

Applications:
 * 1998–2000 Suzuki Wagon R+ (Europe)

K12B
Appeared first in 2008 and reworked with Dualjet technology in 2013. In China, this engine was also used by Suzuki's former joint venture partners, Changan Suzuki and its subsidiaries. Known under E-Power EA12 or JL473Q names. Technical specifications:
 * Displacement: 1242 cc
 * Bore and stroke: 73 mm x 74.2 mm
 * Valvetrain: DOHC, 16-valve, VVT
 * Compression ratio: 11.0–12.0
 * Maximum power:
 * 86-92 PS at 5500–6000 rpm
 * Maximum torque:
 * 114-118 N.m at 4400–4800 rpm

Applications:
 * 2008–2014 Suzuki Splash
 * 2008–2014 Opel/Vauxhall Agila
 * 2010–2017 Suzuki Swift
 * 2011–2015 Suzuki Solio/Mitsubishi Delica D:2
 * 2012–present Changan/Changhe/Chana Star series
 * 2013–2016 Changan CX20
 * 2014–present Suzuki Ciaz
 * 2014–present Changan SC6418
 * 2019–present Esemka Bima 1.2

K12C
The Dualjet version of K12B engine and can also combined with 12-volt SHVS mild hybrid technology or a strong hybrid system with Motor Generator Unit (MGU).

Technical specifications:
 * Displacement: 1242 cc
 * Bore and stroke: 73 mm x 74.2 mm
 * Valvetrain: DOHC, 16-valve, Dual VVT
 * Compression ratio: 12.5
 * Maximum power:
 * 90-91 PS at 6000 rpm
 * 3 PS at 1000 rpm (mild hybrid electric motor)
 * 14 PS at 3185–8000 rpm (strong hybrid electric motor)
 * Maximum torque:
 * 120 N.m at 4400 rpm
 * 50 N.m at 100 rpm (mild hybrid electric motor)
 * 30 N.m at 1000–3185 rpm (strong hybrid electric motor)

Applications:
 * 2015–present Suzuki Solio/Mitsubishi Delica D:2
 * 2017–present Suzuki Swift
 * 2015–present Suzuki Ignis
 * 2015–2020 Suzuki Baleno (Europe and Japan)

K12D
Replacing the previous K12C Dualjet engine for European (and several other markets), as the European emission standard has moved to Euro 6d stage. The displacement is the same as K12M and K12N Dualjet engines. The SHVS mild hybrid system is also standard.

Technical specifications:
 * Displacement: 1197 cc
 * Bore and stroke: 73 mm x 71.5 mm
 * Valvetrain: DOHC, 16-valve, Dual VVT
 * Compression ratio: 13.0
 * Maximum power:
 * 83 PS at 6000 rpm
 * 3 PS at 800 rpm (electric motor)
 * Maximum torque:
 * 107 N.m at 2000 rpm
 * 35 N.m at 499 rpm (electric motor)

Applications:
 * 2020–present Suzuki Swift Hybrid
 * 2020–present Suzuki Ignis Hybrid

K12M
Destroked version of the K12B, developed by Maruti Suzuki. Mainly for the Indian market as the country imposed higher excise tax for petrol engines larger than 1,200 cc. This engine is also available for markets in South East Asia, South America and Africa; in 2020 the K12D derivative was developed from this.

VVT technology was added for this engine in 2012. In February 2018, the Dualjet version was introduced first in Thailand with higher 11.5:1 compression ratio.

Technical specifications:
 * Displacement: 1197 cc
 * Bore and stroke: 73 mm x 71.5 mm
 * Valvetrain: DOHC, 16-valve, with or without VVT
 * Compression ratio: 10.5–11.5
 * Maximum power:
 * 83-87 PS at 6000 rpm
 * 71 PS at 6000 rpm (CNG)
 * Maximum torque:
 * 108-113 N.m at 4000–4400 rpm
 * 95 N.m at 4000 rpm (CNG)

Applications:
 * 2009–2016 Suzuki Splash/Maruti Ritz
 * 2010–2021 Suzuki Swift
 * 2010–2021 Suzuki Dzire
 * 2015–2022 Suzuki Baleno (India)
 * 2017–present Suzuki Ignis
 * 2019–2022 Suzuki Wagon R (India)
 * 2019–2022 Toyota Glanza (India)

K12N
Dualjet version of K12M engine and also available with SHVS mild hybrid technology. A version for commercial vehicles with lower output is also available.

Technical specifications: 80.7 PS at 6000 rpm (commercial vehicle) 71.6 PS at 6000 rpm (CNG, commercial vehicle) 104.4 N.m at 2900 rpm (commercial vehicle) 95 N.m at 2800 rpm (CNG, commercial vehicle)
 * Displacement: 1197 cc
 * Bore and stroke: 73 mm x 71.5 mm
 * Valvetrain: DOHC, 16-valve, Dual VVT
 * Compression ratio: 12.0
 * Maximum power:
 * 90 PS at 6000 rpm
 * 75.5 PS at 6000 rpm (CNG)
 * Maximum torque:
 * 113 N.m at 4200 rpm
 * 98.5 N.m at 4300 rpm (CNG)

Applications:
 * 2020–present Suzuki Dzire (India)
 * 2021–2024 Suzuki Swift (India)
 * 2019–present Suzuki Baleno/Toyota Glanza (India)
 * 2022–present Suzuki Wagon R (India)
 * 2022–present Suzuki Eeco
 * 2023–present Suzuki Fronx (India)
 * 2023–present Suzuki Super Carry
 * 2024–present Toyota Taisor

K14B
Similar as K12B, this engine was also used by Suzuki's former joint venture partner in China. Known under E-Power EA14 or JL473Q1 names.

Technical specifications:
 * Displacement: 1372 cc
 * Bore and stroke: 73 mm x 82 mm
 * Valvetrain: DOHC, 16-valve, VVT
 * Compression ratio: 10.0–11.0
 * Maximum power:
 * 92-96 PS at 6000 rpm
 * 84 PS at 6000 rpm (CNG)
 * Maximum torque:
 * 130-134 N.m at 4000–4800 rpm
 * 110 N.m at 4000–4800 rpm (CNG)

Applications:
 * 2010–2017 Suzuki Swift
 * 2011–2018 Changhe Spla (China/South America)
 * 2012–present Changhe Big Dipper
 * 2012–present Changhe Suzuki Landy/Coolcar
 * 2012–2016 Changhe Ideal
 * 2012–2019 Suzuki Ertiga
 * 2013–2015 Chana Eulove
 * 2013–present Changan Alsvin
 * 2013–2016 Changan CX20
 * 2013–2017 Mazda VX-1 (Indonesia)
 * 2013–2018 Changhe Suzuki Liana (China)
 * 2014–present Changan Benni
 * 2014–2015 Chana Taurustar
 * 2014–2017 Changan Alsvin V3
 * 2014–present Suzuki Ciaz
 * 2015–present Changhe Freedom M50
 * 2016–2019 Proton Ertiga (Malaysia)
 * 2017–2022 Suzuki Baleno
 * 2020–2022 Toyota Starlet (Africa)

K14C


Boosterjet version of K14B engine with direct injection and turbocharger. This engine is no longer available since mid-2020 for European market and replaced by K14D Boosterjet mild hybrid engine.

Technical specifications:
 * Displacement: 1372 cc
 * Bore and stroke: 73 mm x 82 mm
 * Valvetrain: DOHC, 16-valve, VVT
 * Compression ratio: 9.9
 * Maximum power:
 * 136–146 PS at 5500 rpm
 * Maximum torque:
 * 210–230 N.m at 1500–4000 rpm

Applications:
 * 2015–present Suzuki Vitara/Escudo
 * 2016–present Suzuki SX4 S-Cross
 * 2018–present Suzuki Swift Sport

K14D
Reworked K14C Boosterjet engine for European market. Combined with a 48-volt SHVS mild hybrid technology to pass Euro 6d emission standard.

Technical specifications:
 * Displacement: 1372 cc
 * Bore and stroke: 73 mm x 82 mm
 * Valvetrain: DOHC, 16-valve, Dual VVT
 * Compression ratio: 10.8
 * Maximum power:
 * 129 PS at 5500 rpm
 * 14 PS at 3000 rpm (electric motor)
 * Maximum torque:
 * 235 N.m at 2000 rpm
 * 53 N.m at 3000 rpm

Applications:
 * 2020–present Suzuki SX4 S-Cross Hybrid (Europe)
 * 2020–present Suzuki Swift Sport Hybrid (Europe, Singapore, Taiwan, Hong Kong and Macau)
 * 2020–present Suzuki Vitara Hybrid (Europe)

K15B
The biggest engine in the range. SHVS mild hybrid system also available and claimed over 17% more fuel efficient that the non-SHVS engine.

Technical specifications:
 * Displacement: 1462 cc
 * Bore and stroke: 74 mm x 85 mm
 * Valvetrain: DOHC, 16-valve, VVT
 * Compression ratio: 10.0–10.5
 * Maximum power:
 * 102-106 PS at 6000 rpm
 * 92 PS at 6000 rpm (CNG)
 * Maximum torque:
 * 130-138 N.m 4000–4400 rpm
 * 122 N.m at 4400 rpm (CNG)

Applications:
 * 2018–present Suzuki Ciaz (Africa, India and Middle East)
 * 2018–present Suzuki Ertiga
 * 2018–present Suzuki Jimny Sierra
 * 2019–present Suzuki XL6/XL7
 * 2020–2022 Suzuki S-Cross Hybrid (India)
 * 2020–2022 Suzuki Vitara Brezza/Toyota Urban Cruiser (India)
 * 2021–present Toyota Belta (Africa and Middle East)
 * 2022–present Suzuki Baleno (Global)
 * 2023–present Suzuki Fronx (Africa)
 * 2023–present Suzuki Grand Vitara (Africa and Brunei, FWD only)

K15B-C
This engine is similar as the regular K15B, but designed for commercial use. The differences are including different cylinder head cover made from metal with 7 bolts instead of resin material with 12 bolts on the regular K15B engine, different intake manifold position, shorter camshaft profile, lower compression ratio pistons, different timing chain cover design without engine mount (similar as previous generation Suzuki Carry) and different oil pan shape.

Technical specifications:
 * Displacement: 1462 cc
 * Bore and stroke: 74 mm x 85 mm
 * Valvetrain: DOHC, 16-valve
 * Compression ratio: 10.0
 * Maximum power:
 * 97 PS at 5600 rpm
 * Maximum torque:
 * 135 N.m at 4400 rpm

Application:
 * 2019–present Suzuki Carry (International model)

K15C
Dualjet version of K15B engine, it is available in Europe and Japan with 140V strong hybrid combined to a Motor Generator Unit (MGU). Mild hybrid and CNG version is also available, the latter is only available in India.

Technical specifications:
 * Displacement: 1462 cc
 * Bore and stroke: 74 mm x 85 mm
 * Valvetrain: DOHC, 16-valve, Dual VVT
 * Compression ratio: 12.0-13.0
 * Maximum power:
 * 100-103 PS at 6000 rpm
 * 87 PS at 5500 rpm (CNG)
 * 3 PS at 900 rpm (MHEV electric motor)
 * 33 PS at 5500 rpm (HEV electric motor)
 * 115 PS at 5500 rpm (petrol + HEV electric motor)
 * Maximum torque:
 * 132-137 N.m at 4400 rpm
 * 122 N.m at 4200 rpm
 * 60 N.m at 100-2000 rpm (HEV electric motor)

Application:
 * 2022–present Suzuki Brezza
 * 2022–present Suzuki Ertiga (India)
 * 2022–present Suzuki Grand Vitara/Toyota Urban Cruiser Hyryder
 * 2022–present Suzuki SX4 S-Cross Full Hybrid (Europe)
 * 2022–present Suzuki Vitara/Escudo Full Hybrid (Europe/Japan)
 * 2022–present Suzuki XL6 (India)
 * 2023–present Suzuki Fronx