2015 BMW M4 Road Test Specs | Edmunds.com
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2015 BMW M4 - Road Test Specs

2015 BMW M4 Coupe

(3.0L 6-cyl. Twin-turbo 6-speed Manual)

Vehicle

Model year2015
MakeBMW
ModelM4
Style2dr Coupe (3.0L 6cyl Turbo 6M)
Base MSRP$65,150
Options on test vehicleM Carbon-Ceramic Brakes ($8,150), Lighting Package ($1,900), 19-Inch Black Wheel 437 M Mix Tire ($1,200), Sakhir Orange Metallic paint ($550), Enhanced Bluetooth and Smartphone Integration ($500)
As-tested MSRP$77,450

Drivetrain

Drive typeRear-wheel drive
Engine typeTwin-turbocharged, direct-injected, inline-6, gasoline with auto-stop/start
Displacement (cc/cu-in)2,979/182
Block/head materialAluminum/aluminum
ValvetrainDOHC, 4 valves/cylinder variable intake + exhaust-valve timing
Compression ratio (x:1)10.2
Redline (rpm)7,500
Horsepower (hp @ rpm)425 @ 5,500 to 7,300
Torque (lb-ft @ rpm)406 @ 1,850 to 5,500
Fuel type91-octane required
Transmission type6-speed manual
Transmission and axle ratios (x:1)1st-4.110, 2nd-2.315, 3rd-1.542, 4th-1.179, 5th-1.000, 6th-0.846, FD-3.462

Chassis

Suspension, frontIndependent MacPherson struts, coil springs, lower control arms, stabilizer bar
Suspension, rearIndependent multilink, coil springs, stabilizer bar
Steering typeElectric-assist, rack-and-pinion power steering
Steering ratio (x:1)15
Tire brandMichelin
Tire modelPilot Super Sport
Tire typeAsymmetrical summer, high-performance, run-flat
Tire size, front255/35ZR19 92Y
Tire size, rear275/35ZR19 100Y
Wheel size19-by-9 inches front -- 19-by-10 inches rear
Wheel materialForged aluminum
Brakes, front15.8-in two-piece ventilated carbon-ceramic discs with 6-piston fixed calipers
Brakes, rear15-in two-piece ventilated carbon-ceramic discs with 4-piston fixed calipers

Track Test Results

Acceleration, 0-30 mph (sec.)2.0
0-45 mph (sec.)3.3
0-60 mph (sec.)4.4
0-75 mph (sec.)6.1
1/4-mile (sec. @ mph)12.4 @ 116.0
0-60 with 1 foot of rollout (sec.)4.1
Braking, 30-0 mph (ft.)27
60-0 mph (ft.)106
Slalom, 6 x 100 ft. (mph)72.9
Skid pad, 200-ft. diameter (lateral g)0.98
Sound level @ idle (dB)47.1
@ Full throttle (dB)86.6
@ 70 mph cruise (dB)66.7

Test Driver Ratings & Comments

Acceleration commentsAcceleration is deceptively strong, like a tidal wave, from a very low engine speed. At first, it doesn't feel fast, and then from about 2,500 rpm, there's a huge swell of power that ramps up quickly and is maintained all the way to the lofty 7,500-rpm rev-limit. And with that swell of power, keeping the rear tires attached to the pavement is extremely difficult. With traction control left on, the warning light would flash almost constantly throughout 1st gear, and again, at the beginning of 2nd, and AGAIN into 3rd. With three engine modes (Efficiency, Sport, Sport Plus) and three traction-control programs (On, M Dynamic, Off), we sampled them all. The engine feels strong regardless of mode, but the terminal speed at the end of the quarter-mile reveals that full horsepower is only available in Sport Plus. It's surprising there's no dedicated "Launch" mode in here as well, and even MDM (M Dynamic Mode) felt too heavy handed in reducing wheelspin. In the end, traction-control Off and Sport Plus engine mode was quickest/fastest, but it was by no means a walk in the park. Pressing the throttle all the way to the floor too soon would spin the rear tires, so prudence is the key. The clutch pedal is light and predictable. The shifter is also light in action and snaps into the proper gate(s) without worry or fear of a missed shift. Strong performance from what we expected would be a big performer, but fewer aids than we expected to find. Selecting the right mode, getting the optimal launch, proper traction during hard acceleration, and never missing a shift ain't easy, but perhaps that's the way an M car should be. Finally, we saw no drop in the terminal speed at the end of eight quarter-mile passes, demonstrating that the radiators (we counted six) and intercooler are highly effective at dissipating heat.
Braking commentsAs one expects from carbon-ceramic brake discs, once the brakes had a little heat in them, the M4 felt as if it would make the same stop over and over all day long without a fuss. On the other hand, the grabbiness and squealing that used to be associated with carbon-ceramics doesn't seem to be part of the trade-off any longer. These brakes feel otherwise normal in typical driving: Firm pedal, minimal dive, zero fade, and arrow straight. The third stop of five total was the shortest and even the last was shorter than the first.
Handling commentsAs with previous M3 coupes (now called the M4), this car feels as if it's on its toes and ready for any curve or corner it might encounter. However, this one feels more settled and confident in the rapid transitions of our slalom course. When SportPlus steering is selected, it was highly responsive, exactingly precise, and the weight/resistance were perhaps only a little excessive, but appropriate for the task. With the electronic stability control (ESC) set to M Dynamic mode (MDM), the car was permitted to slide either the front or rear tires within a generous range before it would begin selectively applying brakes to redirect the car's heading. It was with this confidence within MDM that the driver could probe the M4's lofty limits without the threat of a spin. One can literally point and steer the car with the throttle and weight transfer between front and rear of the car. Despite this loose leash, the quickest passes were accomplished with the least amount of sliding. Eventually, the front tires were the ones that limited the M4's impressive performance here, however, the sophisticated rear differential would allow the driver to fully apply the throttle for an enthusiastic last-cone leap/exit where it could put all the power to the pavement. Big fun here. It was interesting that even with the ESC in default mode [fully on] that the car's athleticism is nearly equal to the MDM mode, albeit with less allowable skidding/fun.

Testing Conditions

Elevation (ft.)1,121
Temperature (F)73.1
Relative humidity (%)11.7
Wind (mph, direction)2.6, head and cross

Fuel Consumption

EPA fuel economy (mpg)20 combined (17 city/26 highway)
Edmunds observed (mpg)19.3
Fuel tank capacity (U.S. gal.)15.8

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)3,530
Curb weight, as tested (lbs.)3,508
Weight distribution, as tested, f/r (%)52.8/47.2
Length (in.)183.9
Width (in.)73.6
Height (in.)54.4
Wheelbase (in.)110.7
Track, front (in.)62.2
Track, rear (in.)63.1
Turning circle (ft.)40.0
Legroom, front (in.)42.2
Legroom, rear (in.)33.7
Headroom, front (in.)39.8
Headroom, rear (in.)36.1
Shoulder room, front (in.)57.7
Shoulder room, rear (in.)55.1
Seating capacity4
Cargo volume (cu-ft)11.0
Max. cargo volume, seats folded (cu-ft)11.0

Safety

Front airbagsStandard
Side airbagsDual front
Head airbagsFront and rear
Knee airbagsDual front
Antilock brakes4-wheel ABS
Electronic brake enhancementsBraking assist, electronic brakeforce distribution
Traction controlTraction control
Stability controlStability control
Tire-pressure monitoring systemTire-pressure monitoring
IIHS offsetNot Tested
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