Compare the2025 BMW 4 Series Gran CoupeVS 2024 Audi S4

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the 4 Series Gran Coupe are reminded to check the back seat if they opened the rear door before starting out. The S4 doesn’t offer a back seat reminder.

Over 200 people are killed each year when backed over by motor vehicles. The 4 Series Gran Coupe offers an optional Active Park Distance Control that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The S4 doesn’t offer automatic braking for stationary objects directly to the rear.

The 4 Series Gran Coupe has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. A system to reveal vehicles in the S4’s blind spot costs extra.

To help make backing out of a parking space safer, the 4 Series Gran Coupe has standard Cross Traffic Warning, helping the driver avoid collisions. Audi charges extra for Rear Cross-Traffic Assist on the S4.

The 4 Series Gran Coupe’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The S4 doesn’t offer a driver alert monitor.

Both the 4 Series Gran Coupe and the S4 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, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems, rearview cameras, available all wheel drive and around view monitors.

BMW pays for scheduled maintenance on the 4 Series Gran Coupe for 3 years and 36,000 miles. BMW will pay for oil changes, tire rotations, air filter replacements, cabin filter replacement, brake fluid replacement, inspections, and any other required maintenance. Audi only pays for the first scheduled maintenance visit on the S4.

There are over 14 percent more BMW dealers than there are Audi dealers, which makes it easier should you ever need service under the 4 Series Gran Coupe’s warranty.

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Audi vehicles. With 36 fewer problems per 100 vehicles, JD Power ranks BMW higher than Audi.

J.D. Power and Associates’ 2024 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 With 85 fewer problems per 100 vehicles in the first three years of ownership, J.D. Power ranks BMW higher than Audi.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that BMW vehicles are more reliable than Audi vehicles. Consumer Reports ranks BMW 10 places higher in reliability than Audi.

The M440i Coupe’s standard 3.0 turbo 6-cylinder hybrid produces 37 more horsepower (386 vs. 349) and 29 lbs.-ft. more torque (398 vs. 369) than the S4’s 3.0 turbo V6.

On the EPA test cycle the 4 Series Gran Coupe gets better mileage than the S4:

Regenerative brakes improve the 4 Series Gran Coupe’s fuel efficiency by converting inertia back into energy instead of wasting it. The S4 doesn’t offer a regenerative braking system.

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the BMW 4 Series Gran Coupe higher (6 to 7 out of 10) than the Audi S4 (5). This means the 4 Series Gran Coupe produces up to 8 pounds less smog-producing pollutants than the S4 every 15,000 miles.

For better stopping power the M440i Gran Coupe xDrive’s brake rotors are larger than those on the S4:

For better ride, handling and brake cooling the 4 Series Gran Coupe offers optional 20-inch wheels. The S4’s largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the 4 Series Gran Coupe can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The S4 doesn’t offer run-flat tires.

For a smoother ride and more stable handling, the 4 Series Gran Coupe’s wheelbase is 1.4 inches longer than on the S4 (112.4 inches vs. 111 inches).

For better handling and stability, the track (width between the wheels) on the 4 Series Gran Coupe is .5 inches wider in the front and 2.2 inches wider in the rear than on the S4.

The 4 Series Gran Coupe’s front to rear weight distribution is more even (50.4% to 49.6%) than the S4’s (57% to 43%). This gives the 4 Series Gran Coupe more stable handling and braking.

The 4 Series Gran Coupe has 1.3 inches more front headroom and .2 inches more front legroom than the S4.

To make loading and unloading groceries and cargo easier, especially for short adults, the 4 Series Gran Coupe has a standard power liftgate, which opens and closes automatically by pressing a button or just by waving your foot, completely leaving your hands free. The S4 doesn’t offer a power trunk, so its trunk has to be closed manually.

The 4 Series Gran Coupe’s standard Comfort Access allow you to unlock the doors from any outside door handle, open the trunk, and start the engine, all without removing the key from the pocket or purse. Keyless Engine Start/Stop standard on the S4 only offers hands-free access for the ignition, none to unlock the car.

The BMW 4 Series Gran Coupe has power folding mirrors that offer unparalleled convenience while maneuvering in tight places or parked. With the mirrors folded it’s easier to walk past and help prevent parking damage. The mirrors can be quickly unfolded when the driver is ready to leave. Power folding mirrors are only offered on the S4 Premium Plus/Prestige.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the BMW 4 Series has a standard wireless phone charging system (Qi) in the center console. Only the S4 Premium Plus/Prestige offers wireless charging.

The 4 Series Gran Coupe’s optional Parking Assistant Plus can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The S4 Prestige’s automatic parking system requires operating the brakes and transmission to safely park.

The BMW 4 Series comes in coupe, convertible and four door hatchback bodystyles; the Audi S4 isn’t available as a coupe or convertible.

The 4 Series Gran Coupe is available in both rear-wheel drive and all-wheel drive configurations. The S4 doesn’t offer a two-wheel drive configuration.

Insurance will cost less for the 4 Series Gran Coupe owner. The Complete Car Cost Guide estimates that insurance for the 4 Series Gran Coupe will cost $845 less than the S4 over a five-year period.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the BMW 4 Series Gran Coupe will be $2657 to $7244 less than for the Audi S4.

The BMW 4 Series outsold the Audi A4/S4 by almost four to one during 2023.