Mystery AMG GT R: Fixed for FREE & Found to be SUPER Powerful!

Unveiling the Mysterious AMG GT R

• 💡 A 2020 AMG GT R with only 9,000 miles was purchased for $74,000, significantly below market value, due to a listed "defective engine" and "structural damage" which turned out to be factory wrap.
• Mercedes-Benz USA owned the car, confirmed by its first title after the manufacturer's certificate of origin.
• 🚗 Remnants of an AMG Driving Experience car were found, including a Meguire sticker outline, a square number sticker outline on the hood and doors, and an AMG Driving Academy license plate.

Investigating the Engine and Potential Issues

• ⚠️ Coolant was found in one cylinder, but the engine spun freely, the oil filter was clean, and both engine and intercooler coolant systems held pressure.
• The car featured an aftermarket exhaust V-band for easy swapping of catless downpipes.
• ❓ Questions remain about why a Mercedes-Benz corporate-owned car was modified, why its warranty was voided, and why it sat at a dealer auction for over three years.
• Initial diagnostics revealed no significant engine computer codes beyond those from disconnected electrical connectors.

Mechanical Diagnosis and Repair

• 🛠️ After draining and changing the oil, the engine was compression tested, revealing one cylinder with significantly lower compression (97 PSI) compared to others (around 200 PSI).
• A wet compression test, after fogging cylinders with oil, showed the low cylinder's compression significantly improved, suggesting the issue might be related to sitting for an extended period rather than a blown head gasket or cracked ring.
• A blown fuse in the front SAM module was identified as the cause for the car not cranking, and replacing it allowed the engine to start.
• 💨 The engine started and ran smoothly, with no apparent misses or smoke, despite being 4-year-old fuel.

Performance and Discoveries

• 📈 A stock dyno run revealed an impressive 550 wheel horsepower and 550 foot-pounds of torque, significantly higher than the factory-rated 577 crank horsepower, suggesting the car was underrated or had an undocumented factory tune.
• The car's rear-steer system was tested, demonstrating its agility and tight turning radius.
• 💰 The interior dash pad was found to be significantly damaged, with a replacement costing approximately $5,670 from Mercedes-Benz.
• Despite the mystery surrounding the coolant in the cylinder and the voided warranty, the engine was found to be in excellent condition.

Future Plans and Unanswered Questions

• The owner plans to modify the car in future episodes, starting with a tune and potentially new turbos.
• The exact reason for coolant in cylinder one and the voided warranty remain under investigation, with potential leads from MBUSA employees and the alleged former race car driver.
• The car's history might include being in a music video and being a different color, adding to its enigmatic past.