2007 Audi S8

2007 Audi S8

Overview

The 2007 Audi S8, a high-performance variant of the A8 luxury sedan, is equipped with a potent 5.2L V10 engine and a sophisticated all-wheel-drive system. While offering exhilarating performance, its complexity can lead to specific reliability concerns. This analysis focuses on documented issues beyond routine maintenance, highlighting areas that may require attention for owners of this enthusiast-focused vehicle. The S8’s advanced technology and performance-oriented nature mean that potential repairs can be more involved and costly than those for its standard A8 counterpart.

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Engine

5.2L V10 FSI

Carbon Buildup

• Symptoms: Reduced engine power, rough idle, decreased fuel efficiency.
• Solution: Intake manifold cleaning, walnut blasting of intake valves.
• Cost: $500 - $1200

Timing Chain Tensioner Failure

• Symptoms: Rattling noise from the engine, check engine light, potential catastrophic engine damage if ignored.
• Solution: Replacement of timing chains, tensioners, guides, and related components.
• Cost: $3000 - $6000+

Oil Leaks (Valve Cover Gaskets, Oil Cooler Seals)

• Symptoms: Visible oil leaks, burning oil smell, low oil level.
• Solution: Replacement of leaking gaskets and seals.
• Cost: $400 - $900

Transmission

6-Speed Tiptronic Automatic (09L)

Torque Converter Issues

• Symptoms: Shuddering during acceleration, slipping gears, delayed engagement.
• Solution: Replacement of the torque converter.
• Cost: $1500 - $3000

Mechatronic Unit Failure

• Symptoms: Harsh shifting, transmission warning lights, inability to select gears.
• Solution: Repair or replacement of the mechatronic unit.
• Cost: $1000 - $2500

Suspension

Adaptive Air Suspension

Air Spring Leaks

• Symptoms: Vehicle sagging on one or more corners, ‘air suspension malfunction’ warning light.
• Solution: Replacement of leaking air springs or air lines.
• Cost: $600 - $1500 per corner

Compressor Failure

• Symptoms: Inability to raise or lower the vehicle, constant running of the compressor, warning lights.
• Solution: Replacement of the air suspension compressor.
• Cost: $500 - $1000

Electrical

Infotainment System (MMI)

Control Module Failures

• Symptoms: Intermittent or complete failure of MMI functions (navigation, radio, climate control), screen freezing.
• Solution: Software updates, repair or replacement of MMI control unit.
• Cost: $800 - $2000

Door Lock Actuators

Failure

• Symptoms: Doors not locking or unlocking, individual door malfunction.
• Solution: Replacement of faulty door lock actuator.
• Cost: $200 - $500 per door

Exterior

No widespread issues reported.

No major issues reported for this configuration.

Interior

No widespread issues reported.

No major issues reported for this configuration.

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Summary Verdict

The 2007 Audi S8, while a performance marvel, presents several potential reliability challenges, primarily concentrated in its complex V10 engine and adaptive air suspension system. Owners should be prepared for the possibility of significant repair costs related to timing chain components, carbon buildup, and air suspension leaks or compressor failures. Electrical issues with the MMI system and door lock actuators are also noted. Despite these potential drawbacks, the S8 remains a desirable vehicle for those prioritizing performance and luxury, provided they are aware of and prepared for its maintenance and repair needs.