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

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Special Features

•  For SKYACTIV-G 2.0 and SKYACTIV-G 2.5, the following is performed to lower fuel consumption.
―  Improvement of mechanical resistance loss
•  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.
―  Improvement of pumping loss
•  Variable valve timing mechanism has been 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.
•  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.
*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 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, in3})
1,998 {1,998, 121.9}
2,488 {2,488, 151.8}
Bore × stroke
(mm {in})
83.5 × 91.2 {3.29 ×3.59}
89 × 100 {3.50 ×3.94}
Compression ratio
European (L.H.D. U.K.) specs. : 14.0:1
Except European (L.H.D. U.K.) specs. : 13.0:1
13.0:1
Valve timing
IN
Open
BTDC (°)
-32―42
Closed
ABDC (°)
110―36
EX
Open
BBDC (°)
54―9
58―13
Closed
ATDC (°)
7―52
6―51
LUBRICATION SYSTEM
Type
Force-fed type
Oil pressure (reference value)
[Water temperature 80―90 degrees C]
(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 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)
Total (dry engine)
(L {US qt, lmp qt})
4.9 {5.2, 4.3}
Without oil cooler: 5.4 {5.7, 4.8}
With oil cooler: 5.5 {5.8, 4.8}
Oil replacement
(L {US qt, lmp qt})
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}
4.5 {4.8, 4.0}
COOLING SYSTEM
Type
Water-cooled, Electromotive
Water pump
Type
Centrifugal, V-ribbed belt-driven
Thermostat
Type
Wax type
Opening temperature
(°C {°F})
80.5―83.5 {177―182}
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
Cooling fan No.1: 9
Cooling fan No.2: 11
Outer diameter
(mm {in})
320 {12.6}
Cooling fan motor output
(W)
Cooling fan No.1: 90
Cooling fan No.2: 120
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})
62.0 {16.4, 13.6}
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)
Vehicle without i-ELOOP : 12-100
Vehicle with i-ELOOP : 12—25-150
Ignition system
Type
SEI
Spark advance
Electronic
Firing order
1—3—4—2 (all cylinders independent firing)
Spark plug
Type
PE01-18-110, PE02-18-110, PE5R-18-110, PE5S-18-110
STARTING SYSTEM
Starter
Type
Coaxial reduction
Output
(kW)
Vehicle without i-stop : 1.0
Vehicle 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
Hall element
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 pressure [SKYACTIV-G 2.0, European (L.H.D. U.K.) specs.]

am6zzw00014612

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

am6zzw00014613

Compression pressure [SKYACTIV-G 2.5]

am6zzw00014614

Engine oil [Europe]

Recommended engine oil

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

Engine oil [Except Europe]

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)

Specs.

SKYACTIV-G 2.0 ATX

SKYACTIV-G 2.0 MTX

SKYACTIV-G 2.5 ATX
Australian specs.
6.7 L {7.1 US qt, 5.9 Imp qt}
—
6.9 L {7.3 US qt, 6.1 Imp qt}
European (R.H.D.) specs.
6.7 L {7.1 US qt, 5.9 Imp qt}
6.5 L {6.9 US qt, 5.7 Imp qt}
—
European (L.H.D.) specs.
6.9 L {7.3 US qt, 6.1 Imp qt}
6.6 L {7.0 US qt, 5.8 Imp qt}
7.3 L {7.7 US qt, 6.4 Imp qt}
General (R.H.D.) specs.
6.7 L {7.1 US qt, 5.9 Imp qt}
6.5 L {6.9 US qt, 5.7 Imp qt}
6.9 L {7.3 US qt, 6.1 Imp qt}
General (L.H.D.) specs.
6.9 L {7.3 US qt, 6.1 Imp qt}
6.6 L {7.0 US qt, 5.8 Imp qt}
7.0 L {7.4 US qt, 6.2 Imp qt}

Fuel type

Fuel

Research Octane Number

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

*1  :Europe
*2  :Australia, New Zealand
*3  :Republic of Palau & Federated States of Micronesia