2018 Audi S7

2018 Audi S7

Overview

The 2018 Audi S7, a high-performance variant of the A7 Sportback, is generally regarded as a reliable vehicle, especially considering its potent powertrain and advanced technology. It features a powerful 4.0-liter twin-turbocharged V8 engine, known for its strong performance. While the S7 offers an engaging driving experience, like any performance-oriented vehicle, it can be susceptible to specific issues related to its complex systems. Owners typically report satisfaction with its build quality and driving dynamics. However, proactive maintenance and awareness of potential weak points are crucial for long-term ownership satisfaction and to mitigate unexpected repair costs.

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Engine

4.0L Twin-Turbo V8

PCV Valve Failure

• Symptoms: Rough idle, increased oil consumption, potential engine misfires, check engine light.
• Solution: Replacement of the positive crankcase ventilation (PCV) valve assembly.
• Cost: $300 - $600

Oil Leaks (Valve Cover Gaskets)

• Symptoms: Visible oil on the engine, burning oil smell, oil spots under the vehicle.
• Solution: Replacement of valve cover gaskets.
• Cost: $500 - $900

Turbocharger Issues

• Symptoms: Reduced engine power, whistling noises from the engine bay, increased oil consumption.
• Solution: Inspection and potential repair or replacement of turbochargers.
• Cost: $2000 - $4000+

Transmission

7-Speed S Tronic (Dual-Clutch Automatic)

Mechatronic Unit Failure

• Symptoms: Harsh shifting, delayed engagement, transmission warning lights, inability to select gears.
• Solution: Repair or replacement of the mechatronic unit.
• Cost: $1500 - $3000

Clutch Pack Wear

• Symptoms: Jerky acceleration, slipping gears, hesitation during shifts.
• Solution: Replacement of clutch packs.
• Cost: $2500 - $4500

Suspension

Adaptive Air Suspension

Air Strut Leaks

• Symptoms: Vehicle sagging on one corner, uneven ride height, compressor running excessively.
• Solution: Replacement of leaking air struts or air springs.
• Cost: $800 - $1500 per corner

Compressor Failure

• Symptoms: Inability to adjust ride height, suspension remains low, warning lights.
• Solution: Replacement of the air suspension compressor.
• Cost: $700 - $1200

Standard Sport Suspension

No Major Issues

• Symptoms: No widespread issues reported.
• Solution: No widespread issues reported.
• Cost: No widespread issues reported.

Electrical

Infotainment System

Software Glitches

• Symptoms: Screen freezing, unresponsiveness, Bluetooth connectivity issues, navigation errors.
• Solution: Software updates, system resets, or potential module replacement.
• Cost: $200 - $800

Sensors (Parking, Blind Spot)

Malfunctioning Sensors

• Symptoms: False warnings, system deactivation, error messages on the dashboard.
• Solution: Cleaning, recalibration, or replacement of faulty sensors.
• Cost: $300 - $700

Exterior

Body Panels & Trim

No Major Issues

• Symptoms: No widespread issues reported.
• Solution: No widespread issues reported.
• Cost: No widespread issues reported.

Lighting (LED Headlights/Taillights)

No Major Issues

• Symptoms: No widespread issues reported.
• Solution: No widespread issues reported.
• Cost: No widespread issues reported.

Interior

Leather Upholstery

No Major Issues

• Symptoms: No widespread issues reported.
• Solution: No widespread issues reported.
• Cost: No widespread issues reported.

Climate Control System

No Major Issues

• Symptoms: No widespread issues reported.
• Solution: No widespread issues reported.
• Cost: No widespread issues reported.

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Summary Verdict

The 2018 Audi S7 presents a strong case for a reliable performance luxury sedan, with its core powertrain and major systems demonstrating good durability. The most commonly cited potential issues revolve around the complex adaptive air suspension system and the dual-clutch transmission’s mechatronic unit or clutch packs, which can incur significant repair costs if they fail. Engine-related concerns, such as PCV valve leaks and occasional turbocharger issues, are also noted but not universally reported. Electrical gremlins, particularly with the infotainment system, can occur but are often resolved with software updates. Overall, the S7 is a dependable vehicle for those who understand its performance-oriented nature and are prepared for the associated maintenance and potential repair expenses, especially for its advanced features.