2012 INFINITI G-COUPE technical specifications

9 Technical and consumer information
Capacities and recommended fuel/lubricants....... 9-2
Fuel recommendation ...................................... 9-4
Engine oil and oil filter recommendation ......... 9-6
Air conditioning system refrigerant and
lubricant recommendations ............................. 9-7
Specifications ...................................................... 9-8
Engine............................................................. 9-8
Wheels and tires ............................................. 9-9
Dimensions ................................................... 9-11
When traveling or registering your vehicle in
another country ................................................. 9-11
Vehicle identification ......................................... 9-12 Vehicle Identification Number (VIN) plate ....... 9-12
Vehicle identification number
(chassis number) ........................................... 9-12
Engine serial number .................................... 9-12
F.M.V.S.S./C.M.V.S.S. certification label .......... 9-13
Emission control information label ................ 9-13
Tire and loading information label ................. 9-14
Air conditioner specification label.................. 9-14
Installing front license plate .............................. 9-15 Sedan ........................................................... 9-15 Coupe (except for INFINITI Performance Line,
Aerodynamic Package models) ..................... 9-17
Coupe (INFINITI Performance Line,
Aerodynamic Package models) ..................... 9-19
Vehicle loading information............................... 9-20 Terms .......................................................... 9-20
Vehicle load capacity ................................... 9-21
Loading tips................................................. 9-22
Measurement of weights.............................. 9-23
Towing a trailer ................................................. 9-23
Flat towing................................................... 9-23
Uniform tire quality grading .............................. 9-24 Treadwear .................................................... 9-24
Traction AA, A, B and C................................ 9-24
Temperature A, B and C ............................... 9-24
Emission control system warranty ..................... 9-25
Reporting safety defects.................................... 9-26
Readiness for Inspection/Maintenance (I/M) test
(US only)........................................................... 9-27
Event Data Recorders (EDR) ............................... 9-27
Owner’s Manual/Service Manual
order information .............................................. 9-28

9-2Technical and consumer information
The following are approximate capacities. The actual refill capacities may be a little different. When refilling, follow the procedure
instructed in the“8. Maintenance and do-it-yourself” section to determine the proper refill capacity.
Capacity (Approximate)
Recommended specifications
US measure Imp measure Liter
Fuel 20 gal16-5/8 gal 76 See“Fuel recommendation” (P.9-4).
Engine oil (VQ37VHR)*1
.Engine oil with API Certification Mark*2*3
. Viscosity SAE 5W-30
Drain and refill
With oil filter change 5-1/8 qt4-3/8 qt 4.9
Without oil filter change 4-7/8 qt4 qt4.6
Engine oil (VQ25HR)*1
Drain and refill With oil filter change 5 qt4-1/8 qt 4.7
Without oil filter change 4-5/8 qt3-7/8 qt 4.4
Cooling system (VQ37VHR)
Automatic transmission
model With reservoir
9 qt7-1/2 qt 8.5
Pre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent
Reservoir
7/8 qt3/4 qt 0.8
Manual transmission model With reservoir
9-1/8 qt7-5/8 qt 8.6
Reservoir 7/8 qt3/4 qt 0.8
Cooling system (VQ25HR)
AWD With reservoir
9-1/4 qt7-3/4 qt 8.8
Reservoir 7/8 qt3/4 qt 0.8
2WD With reservoir
8-3/4 qt7-1/4 qt 8.3
Reservoir 7/8 qt3/4 qt 0.8
Automatic transmission fluid ———Genuine NISSAN Matic S ATF*4
Manual transmission gear oil ———Genuine NISSAN Manual Transmission Fluid (MTF)
HQ Multi 75W-85 or API GL-4, Viscosity SAE 75W-85
Differential gear oil ———For 7A/T 2WD models:
API GL-5 Synthetic Gear Oil Viscosity SAE 75W-90*6
All other models:
Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or API GL-5, Viscosity SAE
80W-90*5
Transfer fluid ———Genuine NISSAN Matic J ATF*7
CAPACITIES AND RECOMMENDED FUEL/
LUBRICANTS

9-4Technical and consumer information
FUEL RECOMMENDATION
VQ25HR engine
INFINITI recommends the use of unleaded
premium gasoline with an octane rating of
at least 91 AKI (Anti-Knock Index) number
(Research octane number 96).
If unleaded premium gasoline is not
available, you may use unleaded regular
gasoline with an octane rating of at least
87 AKI number (Research octane number
91), but you may notice a decrease in
performance.
VQ37VHR engine
Use unleaded premium gasoline with an
octane rating of at least 91 AKI (Anti-Knock
Index) number (Research octane number
96).
If premium gasoline is not available,
unleaded regular gasoline with an octane
rating of 87 AKI number (Research octane
number 91) may be temporarily used, but
only under the following precautions:
.Have the fuel tank filled only partially
with unleaded regular gasoline, and fill
up with unleaded premium gasoline as
soon as possible. .
Avoid full throttle driving and abrupt
acceleration.
However, for maximum vehicle perfor-
mance, the use of unleaded premium
gasoline is recommended.
CAUTION
. Using a fuel other than that specified
could adversely affect the emission
control system, and may also affect
warranty coverage.
. Under no circumstances should a leaded
gasoline be used, because this will
damage the three-way catalyst.
. Do not use E-85 fuel in your vehicle. Your
vehicle is not designed to run on E-85
fuel. Using E-85 fuel can damage the fuel
system components and is not covered
by the INFINITI vehicle limited warranty.
Gasoline specifications
INFINITI recommends using gasoline that
meets the World-Wide Fuel Charter (WWFC)
specifications where it is available. Many
of the automobile manufacturers devel-
oped this specification to improve emis-
sion system and vehicle performance. Ask your service station manager if the gaso-
line meets the World-Wide Fuel Charter
(WWFC) specifications.
Reformulated gasoline
Some fuel suppliers are now producing
reformulated gasolines. These gasolines
are specially designed to reduce vehicle
emissions. INFINITI supports efforts to-
wards cleaner air and suggests that you
use reformulated gasoline when available.
Gasoline containing oxygenates
Some fuel suppliers sell gasoline contain-
ing oxygenates such as ethanol, MTBE and
methanol with or without advertising their
presence. INFINITI does not recommend the
use of fuels of which the oxygenate content
and the fuel compatibility for your INFINITI
cannot be readily determined. If in doubt,
ask your service station manager.
If you use oxygenate-blend gasoline,
please take the following precautions as
the usage of such fuels may cause vehicle
performance problems and/or fuel system
damage.
.
The fuel should be unleaded and have
an octane rating no lower than that
recommended for unleaded gasoline.

9-8Technical and consumer information
ENGINE
ModelVQ25HRVQ37VHR
Type Gasoline, 4-cycle Gasoline, 4-cycle
Cylinder arrangement 6-cylinder, V-slanted at 608 6-cylinder, V-slanted at 608
Bore 6Stroke in (mm) 3.346 62.886 (85.0 673.3) 3.760 63.385 (95.5 686.0)
Displacement cu in (cm
3) 152.31 (2,496) 225.54 (3,696)
Firing order 1-2-3-4-5-61-2-3-4-5-6
Idle speed rpm
No adjustment is necessary. No adjustment is necessary.
Ignition timing (B.T.D.C.) degree/
rpm
Spark plug Standard FXE22HR-11 FXE24HR-11
Spark plug gap (Normal) in (mm) 0.043 (1.1) 0.043 (1.1)
Camshaft operation Timing chainTiming chain
This spark ignition system complies with the Canadian standard ICES-002.
STI0425
VQ25HR/VQ37VHR engine
SPECIFICATIONS

DIMENSIONS
in (mm)
Sedan: Overall length (with front
license plate) 188.1 (4,779)
189.0 (4,800)*10
Overall length (without
front license plate) 187.9 (4,773)
189.0 (4,800)*10
Overall width 69.8 (1,773)
Overall height 57.2 (1,453)*1*2
57.8 (1,468)*4
Front tread 59.8 (1,520)
Rear tread 59.8 (1,520)*2
60.2 (1,530)*1*3*4
Wheelbase 112.2 (2,850)
Coupe: Overall length (with front
license plate) 183.2 (4,653)*8
183.8 (4,669)*9
185.2 (4,705)*11
Overall length (without
front license plate) 183.1 (4,650)*8
183.7 (4,665)*9
185.0 (4,700)*11
Overall width 71.8 (1,823)
Overall height 54.8 (1,390)*5
54.9 (1,393)*6
55.4 (1,406)*7
Front tread 60.8 (1,545)
Rear tread 61.4 (1,560)
Wheelbase 112.2 (2,850)
*1: Sedan/Two-Wheel Drive (2WD)/17-in
tire models
*2: Sedan/Two-Wheel Drive (2WD)/18-in tire models (FR: 225/50R18, RR:
245/45R18)
*3: Sedan/Two-Wheel Drive (2WD)/18-in tire models (FR, RR: 225/50R18)
*4: Sedan/All-Wheel Drive (AWD) models
*5: Coupe/Two-Wheel Drive (2WD)/18-in tire models
*6: Coupe/Two-Wheel Drive (2WD)/19-in tire models
*7: Coupe/All-Wheel Drive (AWD) models
*8: Coupe/Standard models
*9: Coupe/Sports models
*10: Sedan/Aerodynamic Package models
*11: C oupe/INFINITI Performance Line,
Aerodynamic Package models If you plan to travel in another country,
you should first find out if the fuel
available is suitable for your vehicle’
s
engine.
Using fuel with too low an octane rating
may cause engine damage. All gasoline
vehicles must be operated with unleaded
gasoline. Therefore, avoid taking your
vehicle to areas where appropriate fuel is
not available.
When transferring the registration of your
vehicle to another country, state, province
or district, it may be necessary to modify
the vehicle to meet local laws and regula-
tions.
The laws and regulations for motor vehicle
emission control and safety standards vary
according to the country, state, province or
district; therefore, vehicle specifications
may differ.
When any vehicle is to be taken into
another country, state, province or district
and registered, its modifications, trans-
portation, and registration are the respon-
sibility of the user. INFINITI is not
responsible for any inconvenience that
may result.
Technical and consumer information9-11
WHEN TRAVELING OR REGISTERING YOUR
VEHICLE IN ANOTHER COUNTRY