S5

M4

70 to 0 MPH

150 feet

151 feet

Car and Driver

Suspension and Handling

For better maneuverability, the S5’s turning circle is 2.3 feet tighter than the M4’s (37.7 feet vs. 40 feet).

Chassis

As tested by Car and Driver, the interior of the S5 Prestige Coupe is quieter than the M4 Coupe:

S5

M4

At idle

39 dB

48 dB

Full-Throttle

75 dB

87 dB

70 MPH Cruising

65 dB

68 dB

Cargo Capacity

The S5 Coupe has a larger trunk than the M4 Coupe (11.6 vs. 11 cubic feet).

The S5’s standard folding rear seats are split to accommodate bulky cargo. The M4 Convertible’s standard single piece folding rear seat is not as flexible; long cargo and a passenger can’t share the rear seat.

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Audi service is better than BMW. J.D. Power ranks Audi 8th in service department satisfaction (above the industry average). With a 10% lower rating, BMW is ranked 11th.

Ergonomics

The S5’s power parking brake sets with one touch and releases with one touch or automatically. The M4 has a lever-type parking brake that has to be strenuously raised to engage properly. It has to be lifted up more and a button depressed to release it.

The S5’s front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The M4’s rear power window switches have to be held the entire time to open or close them fully.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the S5 has standard extendable sun visors. The M4 doesn’t offer extendable visors.

Optional air-conditioned seats in the S5 keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The M4 doesn’t offer air-conditioned seats.

To keep a safe, consistent following distance, the S5 Prestige has a standard Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The M4 doesn’t offer an adaptive cruise control.

Model Availability

The Audi S5 comes in coupe, convertible and four-door hatchback bodystyles; the BMW M4 isn’t available as a four-door.

Economic Advantages

Insurance will cost less for the S5 owner. The Complete Car Cost Guide estimates that insurance for the S5 will cost $580 to $2845 less than the M4 over a five-year period.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Audi S5 will be $4828 to $7022 less than for the BMW M4.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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