2002 Infiniti Q45 Road Test Specs | Edmunds

2002 INFINITI Q45 - Road Test Specs

2002 Infiniti Q45 Sedan

(4.5L V8 5-speed Automatic)


Model year2002
Style4dr Sedan (4.5L 8cyl 5A)
Base MSRP$51,045
As-tested MSRP$50,345


Drive typeRWD
Engine typeV8
Displacement (cc/cu-in)4.5
Horsepower (hp @ rpm)340 @ 6400
Torque (lb-ft @ rpm)333 @ 4000
Transmission type5-speed shiftable automatic


Suspension, frontMacPherson strut
Suspension, rearmulti-link
Steering typepower steering
Tire brandMichelin
Tire modelEnergy MXV4
Tire size, frontP225/55VR17
Tire size, rearP225/55VR17
Brakes, frontfront and rear ventilated disc

Track Test Results

0-45 mph (sec.)4.3
0-60 mph (sec.)6.7
0-75 mph (sec.)9.6
1/4-mile (sec. @ mph)15.1 @ 93.5
Braking, 30-0 mph (ft.)29
60-0 mph (ft.)118
Slalom, 6 x 100 ft. (mph)58.1
Skid pad, 200-ft. diameter (lateral g)36.1
@ Full throttle (dB)69
@ 70 mph cruise (dB)73

Test Driver Ratings & Comments

Acceleration commentsWe expected better times from the Q45 than we were able to produce, especially given its 340 horsepower rating. The best time we were able to achieve was a disappointing low 15 in the quarter-mile. We tried several different techniques in our five attempts seeking 14s, but fell just short. Our best run was our fourth using a brake-torque start and manually shifting the automatic close to its 6,700-rpm redline.
Braking ratingExcellent
Braking commentsBraking was short and repeatable. Our best distance came on the second run with a high 117 from 60 miles per hour. Our third run changed only by 3 feet from the first run, so fade does not appear to be an issue. Stability was good, and ABS system noise was noticeable but not intrusive. Overall, the Q's braking performance was very impressive.
Handling ratingPoor
Handling commentsWe had expected handling from this BMW-competitor to be quite good, but were shocked to find out that it handled the cones rather poorly. We've driven SUVs through the cones at higher speeds than we were able to obtain with the Q45. With the "VDC" off, the vehicle was a handful, with the rear wanting to come out on every turn through the slalom. With the "VDC" on, the car still had movement, but it felt more confident and we were able to generate slightly better times. Usually we are able to generate faster times with the electronic aides switched off, but this was not the case for the Q45. Electronic aides usually hinder the slalom testing by taking away too much, but for the Q they were well needed for its disappointing handling characteristics.

Testing Conditions

Elevation (ft.)85
Temperature (°F)72
Wind (mph, direction)1-2 mph

Fuel Consumption

EPA fuel economy (mpg)Auto 17/25 Manual /
Edmunds observed (mpg)15
Fuel tank capacity (U.S. gal.)21.4

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)3801
Length (in.)199.6
Width (in.)72.6
Height (in.)58.9
Wheelbase (in.)113
Legroom, front (in.)44
Legroom, rear (in.)37.3
Headroom, front (in.)38.6
Headroom, rear (in.)38.1
Seating capacity5
Cargo volume (cu-ft)13.7


Bumper-to-bumper4 years / 60,000 miles
Powertrain6 years / 70,000 miles
Corrosion7 years / miles
Roadside assistance4 years / miles
Free scheduled maintenanceNo


Front airbagsStandard
Side airbagsStandard
Head airbagsStandard
Antilock brakesStandard
Electronic brake enhancementsbraking assist
Traction controlYes
Stability controlYes
NHTSA crash test, driverN
NHTSA crash test, passengerN
NHTSA crash test, side frontN
NHTSA crash test, side rearN
NHTSA rollover resistanceN

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