The 2015–2021 Mercedes-AMG GT C190 is the spiritual successor to the SLS AMG gullwing — AMG's first ground-up sports car. Hand-built M178 4.0L biturbo V8 with hot-vee turbocharger placement. 462 HP base to 577 HP GT R. AMG Speedshift DCT 7-speed transaxle only — no manual offered. Rear-wheel drive only. Same engine family as AMG GT 63 4-Door, C63 W205, E63 W213. New price $112,000–$175,000. Today $65,000–$250,000 depending on variant.
We break down the M178 turbo oil line failures requiring top-end disassembly, documented oil consumption "by design," timing chain wear, transaxle DCT mechatronic failures, dated COMAND infotainment with no MBUX retrofit, active rear differential failures on GT C and GT R, AMG Ride Control damper costs, and why a "cheap" AMG GT costs $25,000–$50,000 to own over 5 years.
Spoiler: SLS successor. SLS-level repair bills.
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