2008 Audi S4

2008 Audi S4

Overview

The 2008 Audi S4, a performance-oriented variant of the A4, is known for its potent V8 engine and engaging driving dynamics. While generally well-regarded for its sporty capabilities, like any performance vehicle, it has specific areas that warrant attention from an ownership perspective. This analysis focuses on documented technical reliability issues beyond routine maintenance, providing insights into potential concerns for owners and prospective buyers of this model year. Understanding these common problem areas can help in proactive maintenance and budgeting for repairs.

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Engine

4.2L V8 (Naturally Aspirated)

Timing Chain Guides/Tensioners

• Symptoms: Rattling noise from the rear of the engine, especially on startup; check engine light.
• Solution: Replacement of timing chain, guides, tensioners, and associated seals.
• Cost: $2500 - $4000

Oil Consumption

• Symptoms: Excessive oil usage between changes, potentially leading to low oil levels and engine damage.
• Solution: Can be due to worn piston rings or valve stem seals; requires engine disassembly for repair.
• Cost: $3000 - $6000+

Carbon Buildup

• Symptoms: Reduced engine performance, rough idle, misfires.
• Solution: Intake manifold cleaning, walnut blasting of intake valves.
• Cost: $500 - $1000

Transmission

6-Speed Manual

No Major Issues

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

6-Speed Automatic (Tiptronic)

Torque Converter Issues

• Symptoms: Shuddering, slipping, or delayed engagement.
• Solution: Replacement of the torque converter or transmission rebuild.
• Cost: $2000 - $4500

Suspension

Standard Chassis

Control Arm Bushings

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of worn control arm bushings or entire control arms.
• Cost: $400 - $800

Sway Bar Links

• Symptoms: Rattling or knocking sounds, especially when turning or going over uneven surfaces.
• Solution: Replacement of worn sway bar links.
• Cost: $150 - $300

Electrical

General Electrical System

Window Regulator Failure

• Symptoms: Power windows not operating, window getting stuck.
• Solution: Replacement of the window regulator mechanism.
• Cost: $250 - $500

Infotainment System Glitches

• Symptoms: Screen freezing, unresponsiveness, audio issues.
• Solution: Software updates or replacement of the MMI unit.
• Cost: $500 - $2000+

Exterior

Body and Trim

No Major Issues

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

Interior

Cabin Components

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 2008 Audi S4 offers a compelling blend of performance and luxury, but potential owners should be aware of its specific reliability considerations. The 4.2L V8 engine, while powerful, is prone to issues with timing chain components and oil consumption, which can be costly to repair. Transmission reliability is generally good for the manual, but the automatic can experience torque converter problems. Suspension components like control arm bushings and sway bar links are common wear items. Electrical gremlins, such as window regulators and infotainment glitches, can also arise. Despite these potential drawbacks, with diligent maintenance and awareness of these common issues, the 2008 S4 can remain a rewarding vehicle to own.