2019 Mercedes-Benz SL63 AMG

The 2019 Mercedes-Benz SL63 AMG is a high-performance roadster known for its powerful engine, luxurious interior, and sporty handling. Other engine options for the SL include the SL450 with a 3.0L V6 biturbo, and the SL550 with a 4.7L V8 biturbo. The SL63 AMG boasts a hand-built 4.0L V8 biturbo engine producing 577 horsepower and 664 lb-ft of torque. Most drivers enjoy the car’s quick acceleration, agile handling, and opulent features. Some criticisms include the high price tag, relatively firm ride, and complex infotainment system.

Category

Engine

4.0L V8 Biturbo

• Turbocharger Failure
  • Description/Symptoms: Whining or whistling noises from the engine, loss of power, check engine light illumination. Potential oil leaks from the turbocharger housings.
  • Solution: Turbocharger replacement. Inspect oil lines and replace if necessary.
  • Estimated Cost to Fix: $4,000 - $6,000+
  • Recalls: None Found
• Oil Leaks (Valve Cover, Oil Filter Housing, Rear Main Seal)
  • Description/Symptoms: Visible oil leaks on the engine, burning oil smell, low oil level warning.
  • Solution: Replacement of valve cover gaskets, oil filter housing gasket, or rear main seal.
  • Estimated Cost to Fix: $500 - $2,000+ depending on the location of the leak.
  • Recalls: None Found
• Direct Fuel Injector Issues
  • Description/Symptoms: Rough idling, misfires, decreased fuel economy, check engine light.
  • Solution: Replacement of faulty fuel injectors.
  • Estimated Cost to Fix: $800 - $2,000+
  • Recalls: None Found

Transmission

AMG SPEEDSHIFT MCT 9-Speed Automatic

• Harsh Shifting/Jerking
  • Description/Symptoms: Noticeable harsh or jerky shifts, especially at lower speeds.
  • Solution: Software update of the transmission control unit. If the issue persists, valve body replacement may be necessary.
  • Estimated Cost to Fix: $200 - $300 for software update. $2,000 - $4,000+ for valve body replacement.
  • Recalls: None Found
• Delayed Engagement
  • Description/Symptoms: Noticeable delay when shifting into drive or reverse.
  • Solution: Could be related to low transmission fluid, faulty solenoids within the transmission, or internal damage. Fluid flush and filter change, solenoid replacement, or transmission replacement may be required.
  • Estimated Cost to Fix: $300+ for fluid flush. $800+ for solenoid replacement. $6,000+ for transmission replacement.
  • Recalls: None Found

Suspension

• AIRMATIC System Leaks
  • Description/Symptoms: Vehicle sitting unevenly, suspension warning light, compressor running constantly.
  • Solution: Identify and repair air leaks (typically air struts or air lines). Replace faulty air struts or compressor.
  • Estimated Cost to Fix: $1,000 - $3,000+ per strut. $800 - $1,500 for compressor replacement.
  • Recalls: None Found
• Active Body Control (ABC) Hydraulic Leaks
  • Description/Symptoms: If equipped with ABC, hydraulic fluid leaks can occur, causing the vehicle to sag.
  • Solution: Identify and repair hydraulic lines. Replace faulty pump.
  • Estimated Cost to Fix: $800 - $2,000+ depending on the location of the leak and which parts need replaced.
  • Recalls: None Found

Electrical

• COMAND System Issues
  • Description/Symptoms: Freezing, crashing, slow response, Bluetooth connectivity problems.
  • Solution: Software update. If the problem persists, replacement of the COMAND unit may be necessary.
  • Estimated Cost to Fix: $100 - $300 for software update. $1,500 - $3,000+ for COMAND unit replacement.
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Dead battery, difficulty starting the car.
  • Solution: Diagnose parasitic drain. Could be caused by a faulty module or accessory.
  • Estimated Cost to Fix: $150 - $500+ for diagnostics. Repair cost depends on the source of the drain.
  • Recalls: None Found

Exterior

• Convertible Top Malfunctions
  • Description/Symptoms: Top not opening or closing properly, unusual noises during operation.
  • Solution: Diagnose and repair the convertible top mechanism. This may involve hydraulic lines, motors, or sensors.
  • Estimated Cost to Fix: $500 - $3,000+ depending on the issue.
  • Recalls: None Found

Interior

• Seat Motor Issues
  • Description/Symptoms: Seat not adjusting properly, clicking noises when attempting to adjust the seat.
  • Solution: Replacement of faulty seat motor.
  • Estimated Cost to Fix: $500 - $1,500+ per seat.
  • Recalls: None Found

Summary

The 2019 Mercedes-Benz SL63 AMG, while a desirable performance vehicle, can present owners with a range of potential issues. Engine and transmission problems, while not universally reported, can be costly to repair. Suspension problems are common and can affect the ride quality and handling. Electrical glitches and convertible top malfunctions can also be frustrating. The severity and cost of these issues range from minor inconveniences to major repairs potentially costing thousands of dollars. Prospective buyers should have the car thoroughly inspected by a qualified mechanic before purchasing.