2011 Infiniti G25 Road Test Specs | Edmunds

2011 Infiniti G Sedan - Road Test Specs

2011 Infiniti G Sedan G Sedan

(2.5L V6 7-speed Automatic)


Model year2011
ModelG Sedan
StyleG25 Journey 4dr Sedan (2.5 6cyl 7A)
Base MSRP$33,225
Options on test vehicleMoonroof ($1,000).
As-tested MSRP$34,225


Drive typeRear-wheel Drive
Engine typeNaturally aspirated port-injected V6, gasoline
Displacement (cc/cu-in)2,496/152
Block/head materialAluminum/aluminum
ValvetrainDOHC, 4 valves per cylinder, variable intake-valve timing and lift
Compression ratio (x:1)10.3
Redline (rpm)7,500
Horsepower (hp @ rpm)218 @ 6,400
Torque (lb-ft @ rpm)187 @ 4,800
Fuel typePremium unleaded (recommended)
Transmission typeSeven-speed automatic
Transmission and axle ratios (x:1)I: 4.783; II: 3.102; III: 1.984; IV: 1.371; V: 1.000; VI: 0.870; VII: 0.775; R: 3.858; Final: 3.357


Suspension, frontIndependent double wishbones, stabilizer bar
Suspension, rearIndependent multilink, stabilizer bar
Steering typeHydraulic-assist speed-proportional rack-and-pinion power steering
Steering ratio (x:1)16.4
Tire brandGoodyear
Tire modelEagle RS-A
Tire typeAll-season front and rear
Tire size, frontP225/55R17 95V M+S
Tire size, rearP225/55R17 95V M+S
Wheel size17-by-7.5 inches front and rear
Wheel materialCast aluminum
Brakes, front12.6-inch ventilated steel discs with two-piston sliding calipers
Brakes, rear12.1-inch ventilated steel discs with single-piston sliding calipers

Track Test Results

Acceleration, 0-30 mph (sec.)3.0
0-45 mph (sec.)5.1
0-60 mph (sec.)8.0
0-75 mph (sec.)11.4
1/4-mile (sec. @ mph)15.8 @ 89.2
0-60 with 1 foot of rollout (sec.)7.7
Braking, 30-0 mph (ft.)28
60-0 mph (ft.)109
Slalom, 6 x 100 ft. (mph)65.7
Skid pad, 200-ft. diameter (lateral g)0.91
Sound level @ idle (dB)47.1
@ Full throttle (dB)73.8
@ 70 mph cruise (dB)64.1

Test Driver Ratings & Comments

Acceleration commentsA bit of a disappointment, especially when compared to the G37. Of course, the G25 is giving up about 100 hp. Not even a chirp from the rear tires if you don't power brake. With stability control off and with power braking, the G25 spins and then bogs, as the little V6 doesn't have the power to maintain the wheelspin: a clutch pedal would help. Manual shifting via console lever (pull back for downshifts); nice blips on downshifts, will hold gears at redline.
Braking ratingExcellent
Braking commentsPedal felt completely dead and took 116 feet for the first stop. But after the tires and brakes had some heat in them, the G25 performed admirably. Pedal became firm with a short travel, and you could feel the tires searching for any available grip. Very solid and secure, with minimal front-end dive.
Handling ratingGood
Handling commentsSkid pad: The G25's tight steering, excellent front grip and acceptance of throttle adjustment help it stay on the arc with plenty of speed. Minimal ESC intrusion when switched on, hence the identical times. Slalom: Steering effort feels artificially heavy. The G25 has a penchant for drop-throttle oversteer, making it a handful through the slalom (slightly worn tires didn't help). Front grip is good and gives a nice feel for what that end of the car is up to -- it's the squirelly rear that keeps it from being quicker. ESC barely intervenes when turned on, unless you get really sloppy.

Testing Conditions

Elevation (ft.)1,121
Temperature (°F)69.6
Relative humidity (%)38.1
Wind (mph, direction)2.69 - headwind

Fuel Consumption

EPA fuel economy (mpg)20 city/29 highway/23 combined
Edmunds observed (mpg)19.6
Fuel tank capacity (U.S. gal.)20.0

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)3,552
Curb weight, as tested (lbs.)3,530
Weight distribution, as tested, f/r (%)53.7/46.3
Length (in.)187.9
Width (in.)69.8
Height (in.)57.2
Wheelbase (in.)112.2
Track, front (in.)59.8
Track, rear (in.)60.2
Turning circle (ft.)35.4
Legroom, front (in.)43.9
Legroom, rear (in.)34.7
Headroom, front (in.)40.5
Headroom, rear (in.)37.7
Shoulder room, front (in.)55.6
Shoulder room, rear (in.)55.2
Seating capacity5
Cargo volume (cu-ft)13.5
Max. cargo volume, seats folded (cu-ft)13.5


Bumper-to-bumper4 years/60,000 miles
Powertrain6 years/70,000 miles
Corrosion7 years/Unlimited miles
Roadside assistance4 years/60,000 miles


Front airbagsStandard
Side airbagsDual front
Head airbagsFront and rear
Antilock brakesFour-wheel ABS
Electronic brake enhancementsBraking assist, electronic brakeforce distribution
Traction controlTraction control
Stability controlStability control
Tire-pressure monitoring systemTire-pressure monitoring
NHTSA crash test, driverNot tested
NHTSA crash test, passengerNot tested
NHTSA crash test, side frontNot tested
NHTSA crash test, side rearNot tested
NHTSA rollover resistanceNot tested
IIHS offsetNot tested

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