2012 BMW 3 Series Road Test Specs | Edmunds

2012 BMW 3 Series - Road Test Specs

2012 BMW 3 Series Sedan

(2.0L 4-cyl. Turbo 6-speed Manual)


Model year2012
Style4dr sedan (2.0L 4cyl Turbo 6M)
Base MSRP$34,900
Options on test vehicleMelbourne Red Metallic Paint ($550); Premium Package ($3,600 -- includes universal garage door opener, keyless ignition, power moonroof, auto-dimming interior and exterior mirrors; power front seats with lumbar support and driver seat memory and Dakota leather upholstery); Technology Package ($2,550 -- includes hard drive-based navigation system, real-time traffic information, voice-activation capability, head-up display); Sport Line ($2,500 -- includes sports leather steering wheel, 18-by-8-inch double-spoke (style 397) light alloy wheels with 225/45R18 tires, black mirror caps, sport seats, sport suspension, Anthracite headliner, Sport Line aesthetic elements and increased top speed limiter); Cold Weather Package ($1,350 -- includes heated steering wheel, split fold-down rear seat, three-stage heated front seats, multilevel heated rear seats and retractable headlight washers); Premium Sound Package ($950 -- includes Sirius Satellite Radio with 1-year subscription, Harman Kardon surround-sound system with 420-watt amplifier and 13 speakers); Xenon Headlights ($900 -- includes xenon high-intensity-discharge (HID) high- and low-beam headlights with auto-leveling, adaptive light control and automatic high beams); Adaptive M Suspension ($900 -- includes electronically-controlled dampers); Park Distance Control ($750 -- includes front and rear sonar); BMW Assist With Enhanced BT & USB ($650 -- includes BMW Assist, 4-year subscription to BMW Assist Safety Services, Bluetooth wireless technology); BMW Apps ($250 -- BMW Apps allows an iPhone to access the BMW Connected app and certified 3rd-party apps)
As-tested MSRP$50,745


Drive typeRear-wheel Drive
Engine typeTurbocharged, direct-injected inline-4 with auto-stop/start
Displacement (cc/cu-in)1,997/122
Block/head materialAluminum/aluminum
ValvetrainDOHC, 4 valves per cylinder, variable intake- and exhaust-valve timing, variable intake-valve lift
Compression ratio (x:1)10.0
Redline (rpm)7,200
Horsepower (hp @ rpm)240 @ 5,000
Torque (lb-ft @ rpm)255 @ 1,250-4,800
Fuel typePremium unleaded (required)
Transmission typeSix-speed manual
Transmission and axle ratios (x:1)I = 3.683; II = 2.062; III = 1.313; IV = 1.000; V = 0.809; VI = 0.677; R = 3.348; Final drive = 3.909


Suspension, frontIndependent MacPherson struts with dual lower ball joints, coil springs, driver-adjustable 2-mode variable twin-tube dampers, stabilizer bar
Suspension, rearIndependent multilink, coil springs, driver-adjustable two-mode variable twin-tube dampers, stabilizer bar
Steering typeElectric-assist, speed-proportional rack-and-pinion power steering
Steering ratio (x:1)15.1
Tire brandGoodyear
Tire modelEfficient Grip
Tire typeAsymmetrical summer, run-flat (32 psi cold front; 35 psi cold rear)
Tire size, front225/45R18 91V
Tire size, rear225/45R18 91V
Wheel size18-by-8-inches front and rear
Wheel materialCast aluminum alloy
Brakes, front12.3-by-0.9-inch ventilated disc with single-piston sliding caliper
Brakes, rear11.8-by-0.8-inch ventilated disc with single-piston sliding caliper

Track Test Results

Acceleration, 0-30 mph (sec.)2.1
0-45 mph (sec.)3.9
0-60 mph (sec.)5.9
0-75 mph (sec.)8.6
1/4-mile (sec. @ mph)14.1 @ 98.9
0-60 with 1 foot of rollout (sec.)5.5
Braking, 30-0 mph (ft.)28
60-0 mph (ft.)115
Slalom, 6 x 100 ft. (mph)66.7
Skid pad, 200-ft. diameter (lateral g)0.88
Sound level @ idle (dB)41.6
@ Full throttle (dB)73.9
@ 70 mph cruise (dB)65.6

Test Driver Ratings & Comments

Acceleration commentsRev-limited to 3,800 with ESC on; no limit (below redline) when it's off. Seems relatively indifferent to launch technique -- only a few hundredths of a second separate clutch dump from careful modulation by 60 mph. Shifter is less likable when rushed in this environment. Engine is done at 6,500.
Braking commentsConfident pedal every stop, but fade (+6 feet) present. Not the best braking in the segment.
Handling commentsSkid pad: Heavy steering with quite good communication at the limit. More body roll than expected makes sensing grip limits more difficult. Still, good balance. Adjustable, but slower to respond that I'd prefer. Slalom: Ample body roll makes quick transitions feel awkward. Even so, limits are reasonably well defined. Excellent ESC produces quickest slalom time by 0.01 sec.

Testing Conditions

Elevation (ft.)1,121
Temperature (°F)79.1
Relative humidity (%)16.9
Wind (mph, direction)5.1, headwind

Fuel Consumption

EPA fuel economy (mpg)23 city/34 highway/27 combined
Edmunds observed (mpg)25
Fuel tank capacity (U.S. gal.)15.8

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)3,406
Curb weight, as tested (lbs.)3,427
Weight distribution, as tested, f/r (%)49.6/50.4
Length (in.)182.5
Width (in.)71.3
Height (in.)56.3
Wheelbase (in.)110.6
Track, front (in.)60.3
Track, rear (in.)61.9
Turning circle (ft.)37.0
Legroom, front (in.)42.0
Legroom, rear (in.)35.1
Headroom, front (in.)40.3
Headroom, rear (in.)37.7
Seating capacity5
Cargo volume (cu-ft)17


Bumper-to-bumper4 years/50,000 miles
Powertrain4 years/50,000 miles
Corrosion12 years/Unlimited miles
Roadside assistance4 years/Unlimited miles
Free scheduled maintenance4 years/50,000 miles


Front airbagsStandard
Side airbagsStandard, front seat
Head airbagsStandard
Antilock brakesStandard
Electronic brake enhancementsElectronic brakeforce distribution, brake assist
Traction controlStandard
Stability controlStandard
Tire-pressure monitoring systemStandard

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