The 2 Series offers optional City Collision Mitigation, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The S5 doesn't offer collision warning or crash mitigation brakes.
The 2 Series’ optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The S5 doesn’t offer a lane departure warning system.
The 2 Series offers optional Park Distance Control to help warn the driver about vehicles, pedestrians or other obstacles behind or in front of their vehicle. The S5 doesn’t offer a front parking aid.
The 2 Series has standard BMW Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The S5 doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the 2 Series and the S5 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all wheel drive.
For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the 2 Series its highest rating: “Top Pick Plus” for 2014, a rating granted to only 48 vehicles tested by the IIHS. The S5 has not been tested, yet.
BMW pays for scheduled maintenance on the 2 Series for 4 years and 50,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Audi only pays for the first scheduled maintenance visit on the S5.
There are over 33 percent more BMW dealers than there are Audi dealers, which makes it easier should you ever need service under the 2 Series’ warranty.
To reliably power the ignition and other systems and to recharge the battery, the 2 Series has a standard 170-amp alternator (210-amp - 2 Series 6 cyl.). The S5’s 150-amp alternator isn’t as powerful.
J.D. Power and Associates’ 2014 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Audi vehicles. J.D. Power ranks BMW 8th in initial quality, above the industry average. With 3 more problems per 100 vehicles, Audi is ranked 11th.
J.D. Power and Associates’ 2014 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Audi vehicles. J.D. Power ranks BMW 11th in reliability. With 21 more problems per 100 vehicles, Audi is ranked 19th.
The M235i’s standard 3.0 turbo 6 cyl. produces 5 lbs.-ft. more torque (330 vs. 325) than the S5’s 3.0 supercharged V6.
On the EPA test cycle the M235i xDrive Auto 6 cyl. gets better fuel mileage than the S5 Coupe Auto (20 city/30 hwy vs. 18 city/28 hwy).
Regenerative brakes improve the 2 Series’ fuel efficiency by converting inertia back into energy instead of wasting it. The S5 doesn’t offer a regenerative braking system.
In heavy traffic or at stoplights the 2 Series’ engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The S5 doesn’t offer an automatic engine start/stop system.
The 2 Series stops shorter than the S5:
60 to 0 MPH
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the 2 Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The S5 doesn’t offer run-flat tires.
The 2 Series’ front to rear weight distribution is more even (50.4% to 49.6%) than the S5’s (55.7% to 44.3%). This gives the 2 Series more stable handling and braking.
The M235i handles at .97 G’s, while the S5 Coupe pulls only .90 G’s of cornering force in a Motor Trend skidpad test.
The M235i executes Motor Trend’s “Figure Eight” maneuver quicker than the S5 Coupe (24.9 seconds @ .78 average G’s vs. 25.6 seconds @ .71 average G’s).
For better maneuverability, the 2 Series’ turning circle is 1.6 feet tighter than the S5’s (35.8 feet vs. 37.4 feet).
The BMW 2 Series may be more efficient, handle and accelerate better because it weighs about 550 to 600 pounds less than the Audi S5.
The 2 Series is 8.2 inches shorter than the S5, making the 2 Series easier to handle, maneuver and park in tight spaces.
Because it has more passenger and cargo room, the 2 Series is rated a Compact car by the EPA, while the S5 Coupe is rated a Subcompact.
The 2 Series has 6 cubic feet more passenger volume than the S5 Coupe (90 vs. 84).
The 2 Series has 2.4 inches more front headroom, .2 inches more front legroom, 2.2 inches more front shoulder room, .5 inches more rear headroom, 1.3 inches more rear legroom and 2.4 inches more rear shoulder room than the S5 Coupe.
If the front windows are left down on the 2 Series w/Comfort Access the driver can raise them using the key in the outside lock cylinder. On a hot day the driver can lower the windows from outside the vehicle using the key in the outside lock cylinder or the keyless remote. The driver of the S5 can’t use the remote to operate the windows.
While driving with high beams on, sensitive light sensors available for the 2 Series detect other vehicles which could be blinded and automatically switch to low beams. The S5 doesn’t offer automatic dimming high beams.
When the 2 Series is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The S5’s mirror doesn’t automatically adjust for backing.
On extremely cold Winter days, the 2 Series’ optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The S5 doesn’t offer a heated steering wheel.
Optional BMW Apps for the 2 Series allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, tagging songs to buy them later, following twitter accounts and other connected activities without taking their eyes off the road or their hands from the wheel. The S5 doesn’t offer factory integrated smartphone program access.
The 2 Series’ optional Parking Assistant can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The S5 doesn’t offer an automated parking system.