2012 Infiniti M Hybrid Road Test Specs | Edmunds.com

2012 Infiniti M - Road Test Specs

2012 Infiniti M Hybrid

(3.5L V6 Hybrid 7-speed Automatic)


Model year2012
ModelM Hybrid
Style4dr Sedan (3.5L 6cyl gas/electric hybrid 7A)
Base MSRP$54,765
Options on test vehicleTechnology Package ($3,000 -- includes Intelligent cruise control, Lane departure warning and lane departure prevention, Distance control assist, Intelligent brake assist with forward collision warning, blind spot warning and blind spot intervention systems, front pre-crash seat belts, active trace control, eco pedal, adaptive front lighting system with auto-leveling headlights); Premium Package ($3,350 -- includes Infiniti hard drive navigation system with 8-inch WVGA color touch-screen display, lane guidance and 3-D building graphics, Infiniti voice recognition for audio, navigation, and vehicle information systems, XM NavTraffic with real-time traffic information, XM NavWeather with real time weather and 3-day forecast, Zagat restaurant guide, Bose 2-channel, 10-speaker premium audio system, single in-dash CD/DVD player, 9.3GB Music Box hard drive, streaming audio via Bluetooth wireless technology, climate-controlled front seats, heated steering wheel); Deluxe Touring Package ($3,800 -- includes Bose studio surround sound system with digital 5.1-channel decoding, 16-speakers, Forest Air system with advanced auto recirculation, Breeze mode, Plasmacluster air purifier, and Grape Polyphenol filter, power rear sunshade, semi-aniline leather seating, unique quilted seat pattern with contrast piping and additional seat bolstering, White Ash silver-powdered wood trim, suedelike headliner, premium soft touch material for armrests, door inserts, center console and knee pads, premium stitched meter hood).
As-tested MSRP$65, 375


Drive typeRear-wheel Drive
Engine typeNaturally aspirated, port-injected, V6, gasoline with auto-stop/start
Displacement (cc/cu-in)3,498/213.5
Block/head materialAluminum/aluminum
ValvetrainDOHC, 4 valves/cylinder variable intake-valve timing
Compression ratio (x:1)10.6
Redline (rpm)7,000
Horsepower (hp @ rpm)302 @ 6,800
Torque (lb-ft @ rpm)258 @ 5,000
Fuel typePremium unleaded (recommended)
Transmission type7-speed automatic with console shifter
Transmission and axle ratios (x:1)1st = 4.783; 2nd = 3.103; 3rd = 1.984; 4th = 1.371; 5th = 1.000; 6th = 0.871; 7th = 0.776


Suspension, frontIndependent double-wishbones, coil springs, twin-tube dampers, stabilizer bar
Suspension, rearIndependent multilink, coil springs, twin-tube dampers, stabilizer bar
Steering typeSpeed-proportional power steering
Steering ratio (x:1)16.9
Tire brandMichelin
Tire modelPrimacy MXM4
Tire typeAsymmetrical all-season, low-rolling resistance
Tire size, frontP245/50R18 99V
Tire size, rearP245/50R20 99V
Wheel size18-by-8 inches
Wheel materialCast aluminum
Brakes, front12.6-in ventilated steel discs with 2-piston sliding calipers
Brakes, rear12.1-in ventilated steel discs with 1-piston sliding calipers

Track Test Results

Acceleration, 0-30 mph (sec.)2.2
0-45 mph (sec.)3.6
0-60 mph (sec.)5.2
0-75 mph (sec.)7.6
1/4-mile (sec. @ mph)13.5 @ 102.9
0-60 with 1 foot of rollout (sec.)4.9
Braking, 30-0 mph (ft.)30
60-0 mph (ft.)119
Slalom, 6 x 100 ft. (mph)63.7
Skid pad, 200-ft. diameter (lateral g)0.84
Sound level @ idle (dB)42.5
@ Full throttle (dB)76.4
@ 70 mph cruise (dB)64.4

Test Driver Ratings & Comments

Acceleration commentsThis car is fast! All acceleration runs were made in Sport. I could feel the torque immediately from launch and it maintains it throughout the run. Upshifts are quick and smooth. Turning off traction control only works up to a point and it intervenes with too much wheelspin. For the best run, I woke up the engine prior to releasing the brake.
Braking ratingGood
Braking commentsVery effective brakes, especially from 30-0. Distances grew shorter for the later stops, but then the brakes began pulling to the right. Overall, very good performance aside from the pulling/drifting.
Handling ratingGood
Handling commentsSkid pad: With ESC off, this car has good balance between understeer and oversteer where the rear steps out slightly just before the front understeers. Good setup with ESC on: a combo of throttle and brakes limits speed and disallows the rear from slipping at all. Either way, the steering is springy and only slightly informative. Slalom: ESC off, just as on the skid pad, the rear slides just enough for confident rotation but now the steering remains effective to catch it. Very good balance and precision in transition. With ESC on, corrections occurred before the rear could rotate, but returned control to driver readily.

Testing Conditions

Elevation (ft.)1,121
Temperature (F)60.6
Relative humidity (%)39.5
Wind (mph, direction)2.9 crosswind

Fuel Consumption

EPA fuel economy (mpg)27 city/32 highway/29 combined
Edmunds observed (mpg)20 worst/23 best/21 average
Fuel tank capacity (U.S. gal.)17.8

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)4,129
Curb weight, as tested (lbs.)4,157
Weight distribution, as tested, f/r (%)52/48
Length (in.)194.7
Width (in.)72.6
Height (in.)59.1
Wheelbase (in.)114.2
Track, front (in.)62.0
Track, rear (in.)62.0
Turning circle (ft.)36.7
Legroom, front (in.)44.4
Legroom, rear (in.)36.2
Headroom, front (in.)39.1
Headroom, rear (in.)37.7
Shoulder room, front (in.)58.4
Shoulder room, rear (in.)56.7
Seating capacity5
Cargo volume (cu-ft)11.3


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 brakes4-wheel ABS
Electronic brake enhancementsBraking assist, electronic brakeforce distribution
Traction controlTraction control
Stability controlStability control
Tire-pressure monitoring systemTire-pressure monitoring

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