Jones Ford Buckeye Compares 2015 Ford Mustang VS 2015 BMW 4 Near Surprise, AZ

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2015 Ford Mustang

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VS

2015 BMW 4

Safety Comparison

To help make backing safer, the Mustang Premium’s optional cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The 4 Series Convertible doesn’t offer a cross-path warning system.

Both the Mustang and the 4 Series Convertible have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

Ford’s powertrain warranty covers the Mustang 1 year and 10,000 miles longer than BMW covers the 4 Series Convertible. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 5 years or 60,000 miles. Coverage on the 4 Series Convertible ends after only 4 years or 50,000 miles.

There are over 11 times as many Ford dealers as there are BMW dealers, which makes it much easier should you ever need service under the Mustang’s warranty.

Reliability Comparison

The Mustang has a standard “limp home system” to keep drivers from being stranded if most or all of the engine’s coolant is lost. The engine will run on only half of its cylinders at a time, reduce its power and light a warning lamp on the dashboard so the driver can get to a service station for repairs. The 4 Series Convertible doesn’t offer a lost coolant limp home mode, so a coolant leak could strand you or seriously damage the car’s engine.

Engine Comparison

The Mustang has more powerful engines than the 4 Series Convertible:

Horsepower

Torque

Mustang 3.7 DOHC V6

300 HP

280 lbs.-ft.

Mustang ECOBoost 2.3 turbo 4 cyl.

310 HP

320 lbs.-ft.

Mustang GT 5.0 DOHC V8

435 HP

400 lbs.-ft.

428i Convertible 2.0 turbo 4 cyl.

240 HP

255 lbs.-ft.

435i Convertible 3.0 turbo 6 cyl.

300 HP

300 lbs.-ft.

Fuel Economy and Range Comparison

The Mustang has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The 4 Series Convertible doesn’t offer a cap-less fueling system.

Brakes and Stopping Comparison

For better stopping power the Mustang GT’s brake rotors are larger than those on the 4 Series Convertible:

Mustang GT

Mustang GT opt.

428i Convertible

435i Convertible

Front Rotors

13.9 inches

15 inches

13 inches

13.4 inches

Tires and Wheels Comparison

For better traction, the Mustang has larger standard tires than the 4 Series Convertible (235/55R17 vs. 225/50R17). The Mustang’s optional tires are larger than the largest tires available on the 4 Series Convertible (265/35R20 vs. 225/40R19).

The Mustang’s optional tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the 4 Series Convertible’s optional 40 series front tires.

For better ride, handling and brake cooling the Mustang offers optional 20-inch wheels. The 4 Series Convertible’s largest wheels are only 19-inches.

The Mustang offers an optional space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the 4 Series Convertible, it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.

Suspension and Handling Comparison

The Mustang’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The 4 Series Convertible doesn’t offer drift compensation steering.

For better handling and stability, the track (width between the wheels) on the Mustang is 1.5 inches wider in the front and 2.1 inches wider in the rear than on the 4 Series Convertible.

For better maneuverability, the Mustang’s turning circle is .6 feet tighter than the 4 Series Convertible’s (36.5 feet vs. 37.1 feet).

Chassis Comparison

The Ford Mustang may be more efficient, handle and accelerate better because it weighs about 450 to 550 pounds less than the BMW 4 Series Convertible.

The Mustang ECOBoost uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The 4 Series Convertible doesn’t offer active noise cancellation.

Cargo Capacity Comparison

The Mustang Convertible has a much larger trunk than the 4 Series Convertible with its top down (11.4 vs. 7.8 cubic feet).

Ergonomics Comparison

The Mustang Auto has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The 4 Series Convertible doesn’t offer a remote starting system.

The Mustang Premium’s optional easy entry system glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The 4 Series Convertible doesn’t offer an easy entry system.

The Mustang’s instruments include an oil pressure gauge and a temperature gauge – which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The 4 Series Convertible does not have an oil pressure gauge.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Mustang has standard extendable sun visors. The 4 Series Convertible doesn’t offer extendable visors.

The Mustang Premium’s standard air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. The 4 Series Convertible doesn’t offer air conditioned front seats.

Recommendations Comparison

The Mustang was chosen as one of Car and Driver’s “Top Ten” for 6 of the last 10 years. The 4 Series Convertible hasn’t been picked since 2014.

The Mustang was chosen as one of Automobile Magazine’s “All Stars” for 3 of the last 19 years. The 4 Series Convertible hasn’t been picked since 2014.

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