2021 Audi A4

Introduction

The 2021 Audi A4 is a luxury sedan that offers a refined driving experience and a well-equipped interior. It is available with three different engine options and two transmission options. The base engine is a turbocharged 2.0-liter four-cylinder that produces 190 horsepower and 236 lb-ft of torque. The other two engine options are a turbocharged 3.0-liter V6 that produces 248 horsepower and 273 lb-ft of torque, and a turbocharged 2.5-liter five-cylinder that produces 349 horsepower and 369 lb-ft of torque. The A4 is available with either a six-speed manual transmission or a seven-speed dual-clutch automatic transmission.

People who like the Audi A4 appreciate its comfortable ride, refined interior, and responsive handling. However, some people have reported issues with the vehicle’s engine, transmission, suspension, electrical system, exterior, and interior.

Engine

Turbocharged 2.0-liter Four-Cylinder

• Carbon Buildup on Intake Valves
  • Description/Symptoms: The carbon buildup can cause the engine to misfire, hesitate, and lose power.
  • Solution: The solution is to clean the intake valves.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Timing Chain Tensioner Failure
  • Description/Symptoms: The timing chain tensioner can fail, causing the timing chain to skip and the engine to run rough.
  • Solution: The solution is to replace the timing chain tensioner.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

Turbocharged 3.0-liter V6

• Oil Leaks
  • Description/Symptoms: The engine may leak oil from the valve cover gaskets, oil pan gasket, or rear main seal.
  • Solution: The solution is to replace the leaking gasket or seal.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found
• Water Pump Failure
  • Description/Symptoms: The water pump can fail, causing the engine to overheat.
  • Solution: The solution is to replace the water pump.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Turbocharged 2.5-liter Five-Cylinder

• No Issues Found

Transmission

Six-Speed Manual Transmission

• Grinding When Shifting Gears
  • Description/Symptoms: The transmission may grind when shifting gears.
  • Solution: The solution is to replace the worn synchros.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

Seven-Speed Dual-Clutch Automatic Transmission

• Hesitation and Jerking When Shifting Gears
  • Description/Symptoms: The transmission may hesitate or jerk when shifting gears.
  • Solution: The solution is to update the transmission software.
  • Estimated Cost to Fix: $0 - $500+
  • Recalls: None Found
• Mechatronic Unit Failure
  • Description/Symptoms: The mechatronic unit can fail, causing the transmission to lose power.
  • Solution: The solution is to replace the mechatronic unit.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Suspension

• Front Control Arm Bushing Failure
  • Description/Symptoms: The front control arm bushings can fail, causing the suspension to become loose and noisy.
  • Solution: The solution is to replace the worn bushings.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Rear Shock Absorber Failure
  • Description/Symptoms: The rear shock absorbers can fail, causing the suspension to become soft and bouncy.
  • Solution: The solution is to replace the worn shock absorbers.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery may drain quickly, even when the vehicle is turned off.
  • Solution: The solution is to find and fix the source of the parasitic drain.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found
• Alternator Failure
  • Description/Symptoms: The alternator can fail, causing the battery to not charge properly.
  • Solution: The solution is to replace the alternator.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Exterior

• Chrome Trim Peeling
  • Description/Symptoms: The chrome trim on the exterior of the vehicle may peel or flake off.
  • Solution: The solution is to replace the peeling trim.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Interior

• Infotainment System Glitches
  • Description/Symptoms: The infotainment system may experience glitches, such as freezing, rebooting, or displaying error messages.
  • Solution: The solution is to update the infotainment software or replace the infotainment unit.
  • Estimated Cost to Fix: $0