| Year Make Model | 2014 Infiniti Q50 Premium 4dr Sedan (3.7L 6cyl 7A) |
| Vehicle Type | RWD 4dr 5-passenger Sedan |
| Base MSRP | $40,455 |
| Options on test vehicle | Leather Seating ($1,000); Navigation Package ($1,400) |
| As-tested MSRP | $42,805 |
| Configuration | Longitudinal, front engine, rear-wheel drive |
| Engine type | Naturally aspirated, port-injected V6, gasoline |
| Displacement (cc/cu-in) | 3,696/226 |
| Block/head material | Aluminum/aluminum |
| Valvetrain | DOHC, 4 valves per cylinder, variable intake + exhaust-valve timing and lift |
| Compression ratio (x:1) | 11.0 |
| Redline, indicated (rpm) | 7,500 |
| Horsepower (hp @ rpm) | 328 @ 7,000 |
| Torque (lb-ft @ rpm) | 269 @ 5,200 |
| Fuel type | Premium unleaded (recommended) |
| Transmission type | Seven-speed automatic with console shifter with Sport/Competition modes |
| Suspension, front | Independent double wishbones, coil springs, lower control arms, stabilizer bar |
| Suspension, rear | Independent multilink, coil springs, stabilizer bar |
| Steering type | Hydraulic-assist, rack-and-pinion steering |
| Tire make and model | Bridgestone Potenza RE97AS |
| Tire type | All-season, run-flat (35 psi cold front and rear) |
| Tire size | P225/55RF17 95V M+S |
| Wheel size | 17-by-7.5 inches front and rear |
| Wheel material | Cast aluminum |
| Brakes, front | One-piece ventilated steel discs with two-piston sliding calipers |
| Brakes, rear | One-piece ventilated steel discs with single-piston sliding calipers |
| Acceleration, 0-30 mph (sec.) | 2.4 |
| 0-45 mph (sec.) | 3.7 |
| 0-60 mph (sec.) | 5.5 |
| 0-75 mph (sec.) | 7.9 |
| 1/4-mile (sec. @ mph) | 13.7 @ 102.8 |
| 0-60 with 1 foot of rollout (sec.) | 5.2 |
| 0-30 mph, trac ON (sec.) | 2.3 |
| 0-45 mph, trac ON (sec.) | 3.8 |
| 0-60 mph, trac ON (sec.) | 5.6 |
| 0-75 mph, trac ON (sec.) | 7.9 |
| 1/4-mile, trac ON (sec. @ mph) | 13.7 @102.7 |
| 0-60, trac ON with 1 foot of rollout (sec.) | 5.2 |
| Braking, 30-0 mph (ft.) | 32 |
| 60-0 mph (ft.) | 123 |
| Slalom, 6 x 100 ft. (mph) | 60.9 |
| Slalom, 6 x 100 ft. (mph) ESC ON | 60.1 |
| Skid pad, 200-ft. diameter (lateral g) | 0.79 |
| Skid pad, 200-ft. diameter (lateral g) ESC ON | 0.78 |
| Sound level @ idle (dB) | 38.0 |
| @ Full throttle (dB) | 71.7 |
| @ 70 mph cruise (dB) | 62.8 |
| Engine speed @ 70 mph (rpm) | 2,200 |
| Acceleration comments | The traction control system seems to be optimized to allow the exact amount of wheelspin for an effective launch, as I essentially matched it when I shut it off. The engine pulls hard throughout its rev range, in each gear, and upshifts (in any mode) occur at redline. There seems to be much, much more isolation from the engine/exhaust sounds than in a comparable G37 at idle, wide-open throttle, and at 70-mph cruise, and that is a good thing. |
| Braking comments | Predictably, these tires do the Q50 no favors in braking distances. Anything over 120 feet for a sport sedan (even a touring version of a sport sedan) doesn't sit right with us. Luckily, there's little to no fade or heat soak and the distances remained steady for seven stops. |
| Handling comments | "Slalom: My first impression was that sand had been stewn over the slalom course. Where's the grip? Why is the ESC grabbing brakes so darned hard at the FIRST cone? I am utterly shocked at the lack of capability here -- some 5 mph slower than a G37 (that's huge). Steering is still quick and precise (a little distant), but it was all I could do to maintain a smooth pass without upsetting the ESC that was very, very unhappy and noticeably altering the car's path at each cone. |
| Test date | 7/16/2013 |
| Elevation (ft.) | 1,121 |
| Temperature (°F) | 86.5 |
| Relative humidity (%) | 20.7 |
| Barometric pressure (in. Hg) | 28.67 |
| Wind (mph, direction) | 4.1 head |
| Odometer (mi.) | 714 |
| Fuel used for test | 91-octane gasoline |
| As-tested tire pressures, f/r (psi) | 35/35 |
| EPA fuel economy (mpg) | 20/30/23 city/highway/combined |
| Edmunds observed (mpg) | 26.0 |
| Fuel tank capacity (U.S. gal.) | 20.0 |
| iPod/digital media compatibility | Standard iPod via USB jack |
| Satellite radio | Optional |
| Bluetooth phone connectivity | Standard |
| Navigation system | Optional |
| Smart entry/Start | Standard |
| Curb weight, mfr. claim (lbs.) | 3,611 |
| Curb weight, as tested (lbs.) | 3,603 |
| Weight distribution, as tested, f/r (%) | 55.8/44.2 |
| Length (in.) | 188.3 |
| Width (in.) | 71.8 |
| Height (in.) | 56.8 |
| Wheelbase (in.) | 112.2 |
| Track, front (in.) | 59.8 |
| Track, rear (in.) | 60.2 |
| Legroom, front (in.) | 44.5 |
| Legroom, rear (in.) | 35.1 |
| Headroom, front (in.) | 39.5 |
| Headroom, rear (in.) | 36.8 |
| Shoulder room, front (in.) | 56.7 |
| Shoulder room, rear (in.) | 56.1 |
| Seating capacity | 5 |
| Step-in height, measured (in.) | 15.5 |
| Cargo loading height, measured (in.) | 27.0 |
| Bumper-to-bumper | 4 years/60,000 miles |
| Powertrain | 6 years/70,000 miles |
| Corrosion | 7 years/Unlimited miles |
| Roadside assistance | 4 years/60,000 miles |
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