ENGINE [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5]

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Special Features

• For SKYACTIV-G 1.5, SKYACTIV-G 2.0 and SKYACTIV-G 2.5, the following have been adopted to lower fuel consumption.

― Mechanical resistance loss improvement from:

• Narrowed down crankshaft journal

• Optimized piston skirt shape

• Lowered piston ring tension

• Roller follower adopted

• Reduction of valve spring load

• Stabilization of timing chain behavior

• Optimized engine coolant passage

• Optimized water pump impeller shape

• Lowered drive belt tension

• Optimized oil passage

• Optimized oil pump shape

• Oil pump discharging pressure control has been adopted.

― Pumping loss improvement from:

• Variable valve timing mechanism adopted on both sides of intake and exhaust.

• L-jetronic^*1 and D-jetronic^*2 type detectors have been combined for intake air amount detection, improving the accuracy of the intake air amount measurement.

― MAF sensor adopted

― MAP sensor adopted

― IAT sensor No.1 and No.2 adopted

• Valve timing control has been adopted on both sides of the intake and exhaust, improving fuel economy and emission performance.

Intake side: Electric variable valve timing control

― Intake CMP sensor adopted

― Electric variable valve timing motor/driver adopted

― Electric variable valve timing relay adopted

Exhaust side: Hydraulic variable valve timing control

― Exhaust CMP sensor adopted

• Engine oil control has been adopted reducing engine load.

― Engine oil solenoid valve adopted

• DC-DC converter control has been adopted for improved power supply stability.

― DC-DC converter adopted

• With the adoption of fuel pump control, fuel pump power consumption has been reduced, improving fuel economy.

― Fuel pump control module adopted

• Generator output control adopted, fuel economy/idling stability improved.

― Current sensor adopted

• With the adoption of the ion sensor, which detects pre-ignition, engine reliability has been improved.

• LIN communication has been adopted to the current sensor and DC-DC converter for simplified wiring harnesses. (Without i-ELOOP)

• LIN communication has been adopted to the current sensor and active air shutter for simplified wiring harnesses. (With i-ELOOP)

• With the adoption of the i-ELOOP, charging efficiency during deceleration is improved. Because loss of engine force does not occur when the battery is recharged during deceleration, fuel economy is improved. (With i-ELOOP)

*1 :Measures the intake air amount directly using the MAF sensor.

*2 :Measures the intake air pressure introduced into the cylinder using the MAP sensor and calculates the intake air amount indirectly.

Specification

Item

Specification

SKYACTIV-G 1.5

SKYACTIV-G 2.0

SKYACTIV-G 2.5

MECHANICAL

Type

Gasoline, 4-cycle

Cylinder arrangement and number

In-line, 4-cylinder

Combustion chamber

Pentroof

Valve system

DOHC, timing chain driven, 16 valves

Displacement

(ml {cc})

1,496 {1,496}

1,998 {1,998}

2,488 {2,488}

Bore × stroke

(mm {in})

74.5 × 85.8 {2.93 ×3.38}

83.5 × 91.2 {3.29 ×3.59}

89 × 100 {3.50 ×3.94}

Valve timing

IN

Open

(°)

BTDC 38—ATDC 36

BTDC 42—ATDC 32

Close

(°)

ABDC 36—ABDC 110

EX

Open

(°)

BBDC 59—BBDC 14

BBDC 54—BBDC 9

BBDC 58—BBDC 13

Close

(°)

ATDC 5—ATDC 50

ATDC 7—ATDC 52

ATDC 6—ATDC 51

LUBRICATION SYSTEM

Type

Force-fed type

Oil pressure (reference value)

[Water temperature: 80—90 °C {176—194 °F}]

(kPa {kgf/cm², psi}[rpm])

Low oil pressure: 110―175 {1.13―1.78, 16.0―25.3}[1,500]

High oil pressure: 300―430 {3.06―4.38, 43.6―62.3}[4,500]

Oil pump

Type

Trochoid gear type

Oil cooler (if equipped)

Type

Water-cooled

Oil filter

Type

Full-flow, paper element

Bypass pressure

(kPa {kgf/cm², psi})

78—118 {0.80—1.20, 12.0—17.1}

Oil capacity (approx. quantity)

Oil replacement

(L {US qt, lmp qt})

3.9 {4.1, 3.4}

4.0 {4.2, 3.5}

4.3 {4.5, 3.8}

Oil and oil filter replacement

(L {US qt, lmp qt})

4.2 {4.4, 3.7}

4.2 {4.4, 3.7}

4.5 {4.8, 4.0}

Total (dry engine)

(L {US qt, lmp qt})

4.7 {5.0, 4.1}

Without oil cooler: 4.9 {5.2, 4.3}

With oil cooler: 5.0 {5.3, 4.4}

5.4 {5.7, 4.8}

COOLING SYSTEM

Type

Water-cooled, Electromotive

Water pump

Type

Centrifugal, V-ribbed belt-driven

Thermostat

Type

Wax type

Opening temperature

(°C {°F})

86.5—89.5 {188—193}

Full-open temperature

(°C {°F})

95 {203}

Full-open lift

(mm {in})

8.5 {0.33} or more

Radiator

Type

Corrugated fin type

Cooling system cap

Valve opening pressure

(kPa {kgf/cm², psi})

93.2―122.6 {0.951―1.250, 13.6―17.7}

Cooling fan

Type

Electric type

Number of blades

7

Outer diameter

(mm {in})

Cooling fan No.1: 333 {13.1}

Cooling fan No.2: 308 {12.1}

Cooling fan motor output

(W)

Cooling fan No.1: 83

Cooling fan No.2: 80

FUEL SYSTEM

Fuel injector

Type

High resistance

Fuel supply method

Top-feed

Drive types

Electronic type

Pressure regulator control pressure

(kPa {kgf/cm², psi})

Approx. 430 {4.38, 62.4}

Fuel pump

Type

Electric

Fuel tank

Capacity

(L {US gal, lmp gal})

51.0 {13.5, 11.2}

EMISSION SYSTEM

Catalyst

Type

WU-TWC (monolith)

TWC (monolith)

EVAP control system

Type

Charcoal canister type

PCV system

Type

Closed type

CHARGING SYSTEM

Battery

Voltage

(V)

12

Type

(with i-stop)

Q-85

Type and capacity

(without i-stop)

(A·h/20HR)

55D23L (55), 75D23L (65)

Generator

Output

(V-A)

Without i-ELOOP: 12-100

With i-ELOOP: 12-150

IGNITION SYSTEM

Ignition system

Type

SEI

Spark advance

Electronic

Firing order

1—3—4—2 (all cylinders independent firing)

Spark plug

Type

PE5R-18-110, PE5S-18-110, PEHW-18110

STARTING SYSTEM

Starter

Type

Coaxial reduction

Output

(kW)

Without i-stop: 1.0

With i-stop: 1.4

CONTROL SYSTEM

i-stop OFF switch

ON/OFF

Neutral switch

ON/OFF

CPP switch

ON/OFF

MAF sensor

Hot film

IAT sensor

Cold resistor

MAP sensor

Sealant diaphragm

TP sensor

Hall element

APP sensor

Electromagnetic inductiont

CKP sensor

MR element

CMP sensor

GMR element

ECT sensor

Thermistor

BARO sensor

Piezoelectric element

Fuel pressure sensor

Metal diaphragm

KS

Piezoelectric element

Current sensor

Shunt resistance, Thermistor

A/F sensor

Zirconium element

HO2S

Zirconia element

Clutch stroke sensor

Hall element

Power brake unit vacuum sensor

Piezoelectric element

Item	Specification
MECHANICAL
Type	Gasoline, 4-cycle
Cylinder arrangement and number	In-line, 4-cylinder
Combustion chamber	Pentroof
Valve system	DOHC, timing chain driven, 16 valves
Displacement	(ml {cc})	1,496 {1,496}	1,998 {1,998}	2,488 {2,488}
Bore × stroke	(mm {in})	74.5 × 85.8 {2.93 ×3.38}	83.5 × 91.2 {3.29 ×3.59}	89 × 100 {3.50 ×3.94}
Valve timing	IN	Open	(°)	BTDC 38—ATDC 36	BTDC 42—ATDC 32
Close	(°)	ABDC 36—ABDC 110
EX	Open	(°)	BBDC 59—BBDC 14	BBDC 54—BBDC 9	BBDC 58—BBDC 13
Close	(°)	ATDC 5—ATDC 50	ATDC 7—ATDC 52	ATDC 6—ATDC 51
LUBRICATION SYSTEM
Type	Force-fed type
Oil pressure (reference value) [Water temperature: 80—90 °C {176—194 °F}]	(kPa {kgf/cm², psi}[rpm])	Low oil pressure: 110―175 {1.13―1.78, 16.0―25.3}[1,500] High oil pressure: 300―430 {3.06―4.38, 43.6―62.3}[4,500]
Oil pump	Type	Trochoid gear type
Oil cooler (if equipped)	Type	Water-cooled
Oil filter	Type	Full-flow, paper element
Bypass pressure	(kPa {kgf/cm², psi})	78—118 {0.80—1.20, 12.0—17.1}
Oil capacity (approx. quantity)	Oil replacement	(L {US qt, lmp qt})	3.9 {4.1, 3.4}	4.0 {4.2, 3.5}	4.3 {4.5, 3.8}
Oil and oil filter replacement	(L {US qt, lmp qt})	4.2 {4.4, 3.7}	4.2 {4.4, 3.7}	4.5 {4.8, 4.0}
Total (dry engine)	(L {US qt, lmp qt})	4.7 {5.0, 4.1}	Without oil cooler: 4.9 {5.2, 4.3} With oil cooler: 5.0 {5.3, 4.4}	5.4 {5.7, 4.8}
COOLING SYSTEM
Type	Water-cooled, Electromotive
Water pump	Type	Centrifugal, V-ribbed belt-driven
Thermostat	Type	Wax type
Opening temperature	(°C {°F})	86.5—89.5 {188—193}
Full-open temperature	(°C {°F})	95 {203}
Full-open lift	(mm {in})	8.5 {0.33} or more
Radiator	Type	Corrugated fin type
Cooling system cap	Valve opening pressure	(kPa {kgf/cm², psi})	93.2―122.6 {0.951―1.250, 13.6―17.7}
Cooling fan	Type	Electric type
Number of blades	7
Outer diameter	(mm {in})	Cooling fan No.1: 333 {13.1} Cooling fan No.2: 308 {12.1}
Cooling fan motor output	(W)	Cooling fan No.1: 83 Cooling fan No.2: 80
FUEL SYSTEM
Fuel injector	Type	High resistance
Fuel supply method	Top-feed
Drive types	Electronic type
Pressure regulator control pressure	(kPa {kgf/cm², psi})	Approx. 430 {4.38, 62.4}
Fuel pump	Type	Electric
Fuel tank	Capacity	(L {US gal, lmp gal})	51.0 {13.5, 11.2}
EMISSION SYSTEM
Catalyst	Type	WU-TWC (monolith) TWC (monolith)
EVAP control system	Type	Charcoal canister type
PCV system	Type	Closed type
CHARGING SYSTEM
Battery	Voltage	(V)	12
Type (with i-stop)	Q-85
Type and capacity (without i-stop)	(A·h/20HR)	55D23L (55), 75D23L (65)
Generator	Output	(V-A)	Without i-ELOOP: 12-100 With i-ELOOP: 12-150
IGNITION SYSTEM
Ignition system	Type	SEI
Spark advance	Electronic
Firing order	1—3—4—2 (all cylinders independent firing)

Spark plug	Type	PE5R-18-110, PE5S-18-110, PEHW-18110
STARTING SYSTEM
Starter	Type	Coaxial reduction
Output	(kW)	Without i-stop: 1.0 With i-stop: 1.4
CONTROL SYSTEM
i-stop OFF switch	ON/OFF
Neutral switch	ON/OFF
CPP switch	ON/OFF
MAF sensor	Hot film
IAT sensor	Cold resistor
MAP sensor	Sealant diaphragm
TP sensor	Hall element
APP sensor	Electromagnetic inductiont
CKP sensor	MR element
CMP sensor	GMR element
ECT sensor	Thermistor
BARO sensor	Piezoelectric element
Fuel pressure sensor	Metal diaphragm
KS	Piezoelectric element
Current sensor	Shunt resistance, Thermistor
A/F sensor	Zirconium element
HO2S	Zirconia element
Clutch stroke sensor	Hall element
Power brake unit vacuum sensor	Piezoelectric element

Compression ratio

Specs.	SKYACTIV-G 1.5	SKYACTIV-G 2.0	SKYACTIV-G 2.5
European (L.H.D. U.K.)	14.0:1	14.0:1	—
Australian	—	13.0:1	13.0:1
General (L.H.D.)	13.0:1	13.0:1	13.0:1
Israel	14.0:1	14.0:1	—
General (R.H.D.)^*3	14.0:1	Piston set part number: PEY2-11SA0 13.0:1 Piston set part number: PEY3-11SA0 14.0:1	—
Thailand	—	14.0:1	—

Compression pressure [European (L.H.D. U.K.) specs.] (SKYACTIV-G 1.5)

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Compression pressure [European (L.H.D. U.K.) specs.] (SKYACTIV-G 2.0)

am3zzw00017937

Compression pressure [Australian specs.] (SKYACTIV-G 2.0)

am3zzw00017938

Compression pressure (SKYACTIV-G 2.5)

am3zzw00017939

Compression pressure [General (L.H.D.) specs.] (SKYACTIV-G 1.5)

am3zzw00017940

Compression pressure [General (L.H.D.) specs.] (SKYACTIV-G 2.0)

am3zzw00017938

Compression pressure [Israel] (SKYACTIV-G 1.5)

am3zzw00017936

Compression pressure [Israel] (SKYACTIV-G 2.0)

am3zzw00017937

Compression pressure [General (R.H.D.) specs.] (SKYACTIV-G 1.5 (Compression ratio of 14)^*3)

am3zzw00017936

Compression pressure [General (R.H.D.) specs.] (SKYACTIV-G 2.0 (Compression ratio of 13)^*3)

am3zzw00017938

Compression pressure [General (R.H.D.) specs.] (SKYACTIV-G 2.0 (Compression ratio of 14)^*3)

am3zzw00017937

*3 :For the general (R.H.D.) specification, engine compression ratios of 13 and 14 are included and the specified value of each compression pressure differs.

General (R.H.D.), SKYACTIV-G 1.5

― P5Y1-11SA0 (Compression ratio of 14)

General (R.H.D.), SKYACTIV-G 2.0

― PEY2-11SA0 (Compression ratio of 13)

― PEY3-11SA0 (Compression ratio of 14)

Engine oil [European (L.H.D. U.K.) specs.]

Recommended engine oil		Alternative engine oil
Mazda Original Oil Supra 0W-20	Mazda Original Oil Ultra 5W-30	API SL/SM/SN^*4 or ACEA A3/B3 or A5/B5 0W-20, 5W-30

*4 :Use API SM/SN in Kazakhstan.

Engine oil [Except European (L.H.D. U.K.) specs.]

Item	Specifications
Grade	API SG/SH/SJ/SL/SM/SN or ILSAC GF-2/GF-3/GF-4/GF-5
Viscosity (SAE)	10W-30, 10W-40, 10W-50, 5W-20, 5W-30, 5W-40, 0W-20, 0W-30

Engine coolant capacity (approx. quantity)

Item				Capacity
SKYACTIV-G 1.5	MTX	L.H.D.		5.8 L {6.1 US qt, 5.1 Imp qt}
	MTX	R.H.D.		5.6 L {5.9 US qt, 4.9 Imp qt}
	ATX	L.H.D.		6.0 L {6.3 US qt, 5.3 Imp qt}
		R.H.D.	CW6A-EL	5.8 L {6.1 US qt, 5.1 Imp qt}
		R.H.D.	FW6A-EL	5.9 L {6.2 US qt, 5.2 Imp qt}
SKYACTIV-G 2.0	MTX	L.H.D.		6.3 L {6.7 US qt, 5.5 Imp qt}
	MTX	R.H.D.		6.1 L {6.4 US qt, 5.4 Imp qt}
	ATX	Israel, Russia		6.5 L {6.9 US qt, 5.7 Imp qt}
		Saudi Arabia		6.8 L {7.2 US qt, 6.0 Imp qt}
		European		6.3 L {6.7 US qt, 5.5 Imp qt}
		Except above	L.H.D.	6.5 L {6.9 US qt, 5.7 Imp qt}
		Except above	R.H.D.	6.4 L {6.8 US qt, 5.6 Imp qt}
SKYACTIV-G 2.5	MTX	L.H.D.		6.5 L {6.9 US qt, 5.7 Imp qt}
	MTX	R.H.D.		6.3 L {6.7 US qt, 5.5 Imp qt}
	ATX	L.H.D.		6.7 L {7.1 US qt, 5.9 Imp qt}
	ATX	R.H.D.		6.5 L {6.9 US qt, 5.7 Imp qt}

Engine coolant capacity (approx. quantity) [World manufacturer identification “3MZ”]

SKYACTIV-G 1.5 (MTX): 5.7 L {6.0 US qt, 5.0 Imp qt}

SKYACTIV-G 1.5 (ATX): 6.0 L {6.3 US qt, 5.3 Imp qt}

SKYACTIV-G 2.0 (MTX): 6.2 L {6.6 US qt, 5.5 Imp qt}

SKYACTIV-G 2.0 (ATX): 6.5 L {6.9 US qt, 5.7 Imp qt}

Fuel type

Fuel	Research Octane Number	Country
Premium unleaded fuel (Conforming to EN 228 and within E10)*¹	95 or above	Israel, Azerbaijan, Kazakhstan, Armenia, Georgia, Russia, Belarus, Ukraine, Cyprus, Malta, Ireland, UK, Tahiti, Vanuatu, UAE, Lebanon, Algeria, Libya, Tunisia, Madagascar, Singapore, Hong Kong, Macau, Brunei, Mauritius, South Africa, Jamaica, Barbados, Grenada, ST. Lucia, ST. Vincent, Antigua, Surinam, Guatemala, Bolivia, Honduras, Nicaragua, Aruba, Taiwan, Seychelles, St. Martin, Austria, Greece, Italy, Belgium, Denmark, Portugal, Spain, Hungary, Germany, Poland, Bulgaria, Croatia, Slovenia, Luxembourg, Slovakia, France, Czech, Faeroe, Iceland, Romania, The Netherlands, Macedonia, Bosnia and Herzegovina, Serbia, Montenegro, Albania, Moldova, Switzerland, Finland, Norway, Sweden, , Latvia, Lithuania, Estonia
Premium unleaded fuel (within E85)	95 or above	Thailand
Regular unleaded fuel (Conforming to Fuel Quality Standards Act 2000)*²	90 or above	Australia, New Zealand, Vietnam, The Philippines, Cambodia, Laos, Marshall Islands, Ustt^*3, Kuwait, Oman, Qatar, Saudi Arabia, Syria, Bahrain, Jordan, Iraq, Ivory Coast, Nigeria, Angola, Nepal, Sri Lanka, Fiji, Kenya, Zimbabwe, Trinidad and Tobago, Commonwealth of Dominica, Chile, El Salvador, Costa Rica, Haiti, Dominican Republic (LHD), Panama, Peru, B. Virgin, Curacao, Bndi, Gabon, Ghana, Tanzania, Mozambique, Ecuador, Colombia, Uruguay
	92 or above	Myanmar

*1 :Europe

*2 :Australia

*3 :Republic of Palau & Federated States of Micronesia