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2011 Audi S5

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By Research the Car 5 min read

Here’s a breakdown of common issues and complaints associated with the 2011 Audi S5, categorized by component, and separated by engine and transmission where applicable.

The 2011 Audi S5 is a performance-oriented coupe and cabriolet. It was offered with two primary engine options: a 4.2-liter V8 producing 354 horsepower and 325 lb-ft of torque, and a 3.0-liter Supercharged V6 producing 333 horsepower and 325 lb-ft of torque. The 4.2L was generally favored for its distinctive V8 sound and more linear power delivery, while the 3.0L offered better fuel economy. Transmission options included a 6-speed manual (V8 only), a 6-speed Tiptronic automatic (V8 only), and a 7-speed S-tronic dual-clutch transmission (3.0T only). Owners often appreciate the S5’s stylish design, engaging driving dynamics, and luxurious interior. Common dislikes include higher maintenance costs, potential reliability issues, and sometimes cramped rear seating (especially in the coupe).

Engine

4.2L V8

  • Carbon Buildup
    • Description/Symptoms: Direct injection engines like the 4.2L V8 are prone to carbon buildup on the intake valves. Symptoms include rough idling, misfires, decreased fuel economy, and reduced performance.
    • Solution: A manual cleaning of the intake valves (walnut blasting) or chemical cleaning can remove the carbon deposits.
    • Estimated Cost to Fix: $600 - $1200+
    • Recalls: None Found
  • Timing Chain Tensioner Failure
    • Description/Symptoms: The timing chain tensioners can fail, leading to timing chain rattle, especially on startup. If left unattended, this can lead to catastrophic engine damage.
    • Solution: Replace the timing chain tensioners, guides, and chains.
    • Estimated Cost to Fix: $2000 - $5000+
    • Recalls: None Found
  • Oil Consumption
    • Description/Symptoms: Some 4.2L V8 engines may exhibit excessive oil consumption. This can result in low oil levels, requiring frequent topping off.
    • Solution: Diagnosing the cause can be complex, possibly involving piston rings or valve stem seals. Repair may involve engine disassembly and component replacement.
    • Estimated Cost to Fix: $1000 - $5000+
    • Recalls: None Found

3.0L Supercharged V6

  • Thermostat Failure
    • Description/Symptoms: The thermostat can fail, causing the engine to overheat or run cooler than normal.
    • Solution: Replace the thermostat.
    • Estimated Cost to Fix: $300 - $500+
    • Recalls: None Found
  • Supercharger Failure
    • Description/Symptoms: Supercharger failure or malfunction causing loss of power or odd noises.
    • Solution: Replacement of the Supercharger
    • Estimated Cost to Fix: $3000 - $6000+
    • Recalls: None Found
  • Water Pump Failure
    • Description/Symptoms: The water pump can fail, leading to coolant leaks and potential overheating.
    • Solution: Replace the water pump. Often, the thermostat is replaced at the same time.
    • Estimated Cost to Fix: $500 - $1000+
    • Recalls: None Found

Transmission

6-Speed Manual (4.2L V8 only)

  • Clutch Wear
    • Description/Symptoms: Clutch slippage, difficulty shifting, or a high clutch pedal engagement point.
    • Solution: Replace the clutch disc, pressure plate, and throw-out bearing. Flywheel resurfacing or replacement may also be required.
    • Estimated Cost to Fix: $1200 - $2500+
    • Recalls: None Found

6-Speed Tiptronic Automatic (4.2L V8 only)

  • Valve Body Issues
    • Description/Symptoms: Harsh shifting, delayed engagement, or slipping between gears.
    • Solution: Valve body replacement or rebuild.
    • Estimated Cost to Fix: $800 - $2000+
    • Recalls: None Found

7-Speed S-Tronic Dual-Clutch (3.0L Supercharged V6 only)

  • Mechatronic Unit Failure
    • Description/Symptoms: Erratic shifting, failure to shift, or transmission going into limp mode.
    • Solution: Mechatronic unit replacement or reprogramming.
    • Estimated Cost to Fix: $2500 - $4000+
    • Recalls: None Found
  • Clutch Pack Wear
    • Description/Symptoms: Slipping, jerky shifts, or shuddering during acceleration.
    • Solution: Clutch pack replacement.
    • Estimated Cost to Fix: $2000 - $4000+
    • Recalls: None Found

Suspension

  • Control Arm Bushing Wear
    • Description/Symptoms: Clunking noises from the suspension, especially over bumps. Reduced handling precision and increased tire wear.
    • Solution: Replace worn control arm bushings or the entire control arm assembly.
    • Estimated Cost to Fix: $300 - $800+ per arm
    • Recalls: None Found
  • Damper (Shock Absorber) Failure
    • Description/Symptoms: Bouncy ride, poor handling, and excessive body roll.
    • Solution: Replace the dampers.
    • Estimated Cost to Fix: $400 - $1200+ per pair
    • Recalls: None Found

Electrical

  • Navigation/MMI System Issues
    • Description/Symptoms: The Multi Media Interface (MMI) system can experience freezing, slow response times, or complete failure.
    • Solution: Software updates, MMI control unit replacement.
    • Estimated Cost to Fix: $300 - $1500+
    • Recalls: None Found
  • Power Window Regulator Failure
    • Description/Symptoms: Window not operating correctly, or making noises.
    • Solution: Replace window regulator.
    • Estimated Cost to Fix: $300 - $500
    • Recalls: None Found
  • Battery Drain
    • Description/Symptoms: Battery drains overnight or within a few days, resulting in difficulty starting the vehicle.
    • Solution: Diagnosing the source of the drain and repairing the faulty component. Common culprits include aftermarket electronics, faulty modules, or a failing alternator.
    • Estimated Cost to Fix: $100 - $1000+ depending on the cause
    • Recalls: None Found

Exterior

  • Headlight Bulb Failure (HID/Xenon)
    • Description/Symptoms: HID/Xenon headlights can fail over time, resulting in a dim or non-functional headlight.
    • Solution: Replace the headlight bulb.
    • Estimated Cost to Fix: $100 - $300+ per bulb
    • Recalls: None Found

Interior

  • Sunroof Issues
    • Description/Symptoms: Sunroof may get stuck, leak, or make excessive noise when opening or closing.
    • Solution: Lubricating tracks, replacing damaged components, or recalibrating the sunroof system.
    • Estimated Cost to Fix: $200 - $800+
    • Recalls: None Found

Summary:

The 2011 Audi S5, while a desirable performance vehicle, can present owners with a range of potential issues. The most significant concerns revolve around engine problems, particularly carbon buildup and timing chain issues in the 4.2L V8, and supercharger and water pump failures in the 3.0L V6. Transmission issues, especially with the S-Tronic dual-clutch, can also be costly. Suspension and electrical problems add to the overall maintenance burden. Potential repair costs can range from a few hundred dollars for minor issues to several thousand dollars for major engine or transmission repairs. Buyers should be aware of these potential pitfalls and budget accordingly for maintenance and repairs.

Audi, S5
Audi S5 2011
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