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To maximize occupant safety, the front seat shoulder belts of the BMW M4 have pretensioners to eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Toyota Supra doesn’t offer pretensioners.
The M4 offers an optional Side and Top View Cameras to allow the driver to see objects all around the vehicle on a screen. The Supra only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
Both the M4 and the Supra have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras and available blind spot warning systems.
The M4 comes with a full 4-year/50,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The Supra’s 3-year/36,000-mile basic warranty expires 1 year and 14,000 miles sooner.
The M4’s corrosion warranty is 7 years longer than the Supra’s (12 vs. 5 years).
BMW pays for scheduled maintenance on the M4 for 1 year and 11000 miles longer than Toyota pays for maintenance for the Supra (3/36,000 vs. 2/25000).
The M4’s standard 3.0 turbo 6 cyl. produces 90 more horsepower (425 vs. 335) and 41 lbs.-ft. more torque (406 vs. 365) than the Supra’s 3.0 turbo 6 cyl. The M4’s optional 3.0 turbo 6 cyl. produces 109 more horsepower (444 vs. 335) and 41 lbs.-ft. more torque (406 vs. 365) than the Supra’s 3.0 turbo 6 cyl. The M4 CS Coupe’s standard 3.0 turbo 6 cyl. produces 118 more horsepower (453 vs. 335) and 77 lbs.-ft. more torque (442 vs. 365) than the Supra’s 3.0 turbo 6 cyl.
The M4 has 2.1 gallons more fuel capacity than the Supra (15.8 vs. 13.7 gallons), for longer range between fill-ups.
The M4 offers a manual transmission for better acceleration, control and fuel economy. The Supra doesn’t offer a manual transmission.
The M4 offers an optional sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Supra doesn’t offer an SMG.
For better stopping power the M4’s brake rotors are larger than those on the Supra:
Opt Rear Rotors
The M4 offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The Supra doesn’t offer ceramic brake rotors.
For better traction, the M4’s optional tires are larger than the largest tires available on the Supra (F:265/30R20 & R:285/30R20 vs. F:255/35R19 & R:275/35R19).
The M4’s optional tires provide better handling because they have a lower 30 series profile (height to width ratio) that provides a stiffer sidewall than the Supra’s 35 series tires.
For better ride, handling and brake cooling the M4 offers optional 20-inch wheels. The Supra’s largest wheels are only 19-inches.
For a smoother ride and more stable handling, the M4’s wheelbase is 13.5 inches longer than on the Supra (110.7 inches vs. 97.2 inches).
The M4’s standard power retractable hardtop allows a seamless transition from an open car, to a completely sealed coupe. The Supra doesn’t offer a retractable hardtop.
As tested by Car and Driver while cruising at 70 MPH, the interior of the M4 Coupe is quieter than the Supra 3.0 Premium (68 vs. 73 dB).
The M4 has standard seating for 4 passengers; the Supra can only carry 2.
The M4 Coupe has 39.2 cubic feet more passenger volume than the Supra (90.2 vs. 51).
The M4 Coupe has 1.5 inches more front headroom and .9 inches more front shoulder room than the Supra.
The M4 Coupe has a larger trunk than the Supra (11 vs. 10.2 cubic feet).
With its coupe body style, valet key, locking rear seatbacks and remote trunk release lockout, the M4 offers cargo security. The Supra’s hatchback body style defeats cargo security.
To make loading groceries and cargo easier when your hands are full, the M4’s trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The Supra doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.
Heated windshield washer nozzles are standard on the M4 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Supra doesn’t offer heated windshield washer nozzles.
In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The M4 offers available headlight washers to keep headlight output high. The Supra doesn’t offer headlight washers.
To help drivers avoid possible obstacles, the M4 has standard cornering lights to illuminate around corners when the turn signals are activated. The Supra doesn’t offer cornering lights. The M4 also offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.
The M4’s sun-visors swivel front-to-side to block glare from the side windows. The Supra’s visors are fixed into the windshield header.
A power rear sunshade is optional in the M4 Coupe to help block heat and glare for the rear passengers. The Supra doesn’t offer a rear sunshade.
On extremely cold winter days, the M4’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The Supra doesn’t offer a heated steering wheel.
The M4’s standard GPS navigation system has a real-time traffic update feature that plots alternative routes to automatically bypass traffic problems. (Service not available in all areas.) The Supra’s available navigation system doesn’t offer real-time traffic updates.
The M4’s optional Parking Assistant can parallel park by itself, with the driver only controlling speed with the brake pedal. The Supra doesn’t offer an automated parking system.
The BMW M4 comes in coupe and convertible bodystyles; the Toyota Supra isn’t available as a convertible.
The 4 Series was chosen as one of Car and Driver’s “Top Ten” in 2014. The Supra has never been a Car and Driver “Top Ten” pick.
The M3/M4 was chosen as one of Automobile Magazine’s “All Stars” for 13 of the last 23 years. The Supra has never been an “All Star.”
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