2017 Audi S7

The 2017 Audi S7 is a performance-oriented luxury sedan known for its sleek design, powerful engine, and comfortable interior. It comes standard with a 4.0-liter twin-turbocharged V8 engine producing 450 horsepower and 406 lb-ft of torque. Power is delivered through a 7-speed S tronic dual-clutch automatic transmission, sending power to all 4 wheels via the quattro all-wheel-drive system. Owners typically appreciate the S7’s rapid acceleration, refined handling, and luxurious amenities. However, some criticisms include the high cost of maintenance and potential for expensive repairs, especially regarding the complex engine and electronics.

Engine

4.0L TFSI V8

• Oil Leaks
  • Description/Symptoms: Oil leaks can occur from various locations, including the valve cover gaskets, rear main seal, and turbocharger oil lines. Symptoms may include visible oil drips under the car, a burning oil smell, and low oil levels.
  • Solution: Replacing the leaking gaskets or seals is the typical fix. Turbo oil line leaks may require replacing the entire line.
  • Estimated Cost to Fix: $100 - $1500+ depending on the location and severity of the leak.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: The twin turbochargers can experience failures, including wastegate issues, bearing failures, and oil leaks. Symptoms may include a loss of power, unusual noises (whining or whistling), and check engine light illumination.
  • Solution: Replacement of the faulty turbocharger is often necessary.
  • Estimated Cost to Fix: $2,000 - $5,000+ per turbo depending on labor and part sourcing.
  • Recalls: None Found
• Carbon Buildup
  • Description/Symptoms: Direct injection engines like the 4.0L TFSI are prone to carbon buildup on the intake valves, which restricts airflow and reduces performance. Symptoms may include rough idling, hesitation during acceleration, and decreased fuel economy.
  • Solution: A carbon cleaning service, typically involving walnut blasting or chemical cleaning of the intake valves.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Transmission

7-Speed S Tronic Dual-Clutch

• Mechatronic Unit Failure
  • Description/Symptoms: The Mechatronic unit, which controls the transmission’s hydraulic functions, can fail. Symptoms may include harsh shifting, delayed engagement, transmission slipping, or inability to shift gears.
  • Solution: Replacement or repair of the Mechatronic unit.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found
• Clutch Wear
  • Description/Symptoms: The dual-clutch transmission relies on clutches for gear changes. Over time, these clutches can wear out. Symptoms include slipping during acceleration, jerky shifts, and transmission shudder.
  • Solution: Clutch replacement is required.
  • Estimated Cost to Fix: $3,000 - $5,000+
  • Recalls: None Found

Suspension

• Air Suspension Issues
  • Description/Symptoms: The air suspension system can experience leaks in the air struts or air lines, compressor failures, or issues with the control module. Symptoms include the car sitting unevenly, a malfunctioning ride height adjustment, or a “suspension fault” warning light.
  • Solution: Repair or replacement of the leaking strut(s), air lines, compressor, or control module.
  • Estimated Cost to Fix: $500 - $2,500+ per strut, $300 - $1,000 for the compressor.
  • Recalls: None Found

Electrical

• Infotainment System Malfunctions
  • Description/Symptoms: The MMI (Multi Media Interface) system can experience glitches, freezing, or complete failure. This can affect navigation, audio, climate control, and other vehicle functions.
  • Solution: Software updates or replacement of the MMI control unit.
  • Estimated Cost to Fix: $200 - $2,000+ depending on the severity of the issue.
  • Recalls: None Found
• Sensor Failures
  • Description/Symptoms: Various sensors throughout the vehicle can fail, leading to warning lights and malfunctioning systems. Common culprits include ABS sensors, oxygen sensors, and parking sensors.
  • Solution: Replacement of the faulty sensor.
  • Estimated Cost to Fix: $100 - $500+ per sensor depending on the sensor type and location.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroofs are prone to track issues, motors wearing out, or leaking. This can be due to age or lack of lubrication
  • Solution: Replacing the motor, lubricating the track, or replacing the sunroof.
  • Estimated Cost to Fix: $300 - $1,200+ depending on severity.
  • Recalls: None Found

Summary

The 2017 Audi S7, while offering a thrilling driving experience and luxurious features, can be prone to some potentially expensive issues. Engine problems like oil leaks and turbocharger failures, along with transmission issues related to the Mechatronic unit or clutch wear, can lead to significant repair costs. Air suspension problems and electrical malfunctions also contribute to the potential for higher maintenance expenses. Potential buyers should be aware of these common issues and factor them into their ownership considerations.