Compare the2026 BMW M3VS 2025 Audi RS 5 Sportback

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 M3 are reminded to check the back seat if they opened the rear door before starting out. The RS 5 Sportback doesn’t offer a back seat reminder.

Over 200 people are killed each year when backed over by motor vehicles. The M3 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 RS 5 Sportback doesn’t offer automatic braking for stationary objects directly to the rear.

The M3 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 RS 5 Sportback’s blind spot costs extra.

To help make backing out of a parking space safer, the M3 has standard Cross Traffic Warning, helping the driver avoid collisions. Audi charges extra for Rear Cross-Traffic Assist on the RS 5 Sportback.

The M3’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 RS 5 Sportback doesn’t offer a driver alert monitor.

Both the M3 and the RS 5 Sportback 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 and available around view monitors.

BMW pays for scheduled maintenance on the M3 for 3 years and 36,000 miles. BMW will pay for oil changes, 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 RS 5 Sportback.

There are over 14 percent more BMW dealers than there are Audi dealers, which makes it easier should you ever need service under the M3’s warranty.

To reliably start during all conditions and help handle large electrical loads, the M3 has a standard 720-amp battery. The RS 5 Sportback’s 420-amp battery isn’t as powerful.

J.D. Power and Associates’ 2025 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 73 fewer problems per 100 vehicles, JD Power ranks BMW higher than Audi.

J.D. Power and Associates’ 2025 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 above average in long-term dependability. With 13 more problems per 100 vehicles in the first three years of ownership, Audi is rated below average.

The M3’s standard 3.0 turbo 6-cylinder produces 29 more horsepower (473 vs. 444) than the RS 5 Sportback’s 2.9 turbo V6. The M3 Competition’s standard 3.0 turbo 6-cylinder produces 59 more horsepower (503 vs. 444) and 37 lbs.-ft. more torque (479 vs. 442) than the RS 5 Sportback’s 2.9 turbo V6. The M3 Competition xDrive’s standard 3.0 turbo 6-cylinder produces 79 more horsepower (523 vs. 444) and 37 lbs.-ft. more torque (479 vs. 442) than the RS 5 Sportback’s 2.9 turbo V6.

As tested in Car and Driver the M3 Competition is faster than the Audi RS 5 Sportback (automatics tested):

The M3 offers a manual transmission for better acceleration, control and sportiness. The RS 5 Sportback doesn’t offer a manual transmission.

The M3’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The RS 5 Sportback doesn’t offer launch control.

For better stopping power the M3’s brake rotors are larger than those on the RS 5 Sportback:

The M3 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 RS 5 Sportback doesn’t offer ceramic brake rotors.

For better traction, the M3 has larger tires than the RS 5 Sportback (F:275/40R18 & R:285/35R19 vs. 265/35R19).

For a smoother ride and more stable handling, the M3’s wheelbase is 1.2 inches longer than on the RS 5 Sportback (112.5 inches vs. 111.3 inches).

The M3 Competition handles at 1.03 G’s, while the RS 5 Sportback pulls only .97 G’s of cornering force in a Car and Driver skidpad test.

The BMW M3 may be more efficient, handle and accelerate better because it weighs about 100 to 250 pounds less than the Audi RS 5 Sportback.

The M3 has 4 cubic feet more passenger volume than the RS 5 Sportback (95 vs. 91).

The M3 has 2.9 inches more front headroom, .6 inches more front legroom, .3 inches more front shoulder room, .8 inches more rear headroom, .5 inches more rear legroom and .1 inches more rear shoulder room than the RS 5 Sportback.

Pulling a handle automatically lowers the M3’s rear seats, to make changing between passengers and cargo easier. The RS 5 Sportback doesn’t offer automatic folding seats.

With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the M3 offers cargo security. The RS 5 Sportback’s hatchback body style defeats cargo security.

The M3’s standard power windows have a locking feature to keep children in the rear seat from operating them, but the driver can still raise and lower all of them with the lock engaged. Audi does not offer a locking feature on the RS 5 Sportback’s standard power windows.

The M3’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The RS 5 Sportback’s cruise control switches are unlit, making them difficult to find at night and operate safely.

The RS 5 Sportback’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The M3’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

Optional air-conditioned seats in the M3 keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The RS 5 Sportback doesn’t offer air-conditioned seats.

The M3’s optional Parking Assistant Plus can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The RS 5 Sportback’s automatic parking system requires operating the brakes and transmission to safely park.

The M3 is available in both rear-wheel drive and all-wheel drive configurations. The RS 5 Sportback doesn’t offer a two-wheel drive configuration.

The BMW 3 Series outsold the Audi A5/S5/RS 5 by 35% during 2024.