Why The Used AMG S63 Coupe Is Our Top Pick
Luxury car depreciation is the rapid loss of value that hits high-end performance models harder than mainstream cars, turning once-pricey coupes into used-market bargains that still deliver prestige, speed, and advanced technology for far less than their original cost. The used AMG S63 coupe is the standout example and our clear top pick for most buyers. In six years, this flagship Mercedes-AMG has lost about 57% of its original value, yet it still offers explosive performance, an opulent cabin, and sophisticated suspension engineering. With a hand-built twin-turbo V8, standard 4Matic all-wheel drive, and Airmatic air suspension tuned for both comfort and sharp handling, it feels every bit like an ultra-luxury grand tourer. If you can budget for higher-running costs, depreciation has already done the heavy financial lifting, making the used AMG S63 coupe the smartest entry into high-end car bargains today.
| Spec | Mercedes-AMG S63 Coupe | BMW M8 Gran Coupe |
|---|---|---|
| Engine | Twin-turbo V8 (5.5L pre-facelift / 4.0L facelift) | 4.4L twin-turbo V8 |
| Power | 577 hp (5.5L) / 603 hp (4.0L) | 600 hp standard, 617 hp Competition |
| 0–60 mph | 3.9 s (5.5L) / 3.4 s (4.0L) | As quick as 2.7 s in testing |
| Drivetrain | AWD 4Matic with 7- or 9-speed automatic | AWD with automatic transmission |
| Character | Ultra-luxury grand tourer coupe | High-performance four-door coupe, more overtly sporty |
Inside The AMG S63: Ultra-Luxury Performance On Sale
The Mercedes-AMG S63 Coupe was engineered as the ultimate S-Class two-door, built to cross huge distances without disturbing its passengers while delivering serious performance. Early cars used a 5.5-liter twin-turbo V8 with 577 hp and 664 lb-ft, good for 0–60 mph in about 3.9 seconds and a limited 186 mph top speed. Facelift models switched to a more advanced 4.0-liter twin-turbo V8, raising output to 603 hp with the same torque and cutting the 0–60 time to 3.4 seconds. Both engines are hand-built and paired with 4Matic all-wheel drive plus adaptive Airmatic suspension, which constantly adjusts damping to balance comfort and sportiness. You still get flagship-level tech, lavish materials, and imposing road presence. According to RepairPal, annual maintenance runs lower than rival ultra-luxury coupes, making the S63 AMG a smarter alternative to more exotic badges for buyers who want maximum comfort, power, and value in one package.
BMW M8 Gran Coupe: Massive Depreciation, Massive Performance
If you want something sharper and more aggressive, BMW M8 used prices also show how luxury car depreciation creates big wins for buyers. The 2021 BMW M8 Gran Coupe has shed as much as 54% of its value in five years, yet its performance credentials are outrageous. Under the bonnet sits a 4.4-liter twin-turbo V8, producing 600 hp in standard form and 617 hp in Competition trim. Tested acceleration has beaten the official claims, with 0–60 mph runs dipping under three seconds and skidpad grip measured at 1.02 g. This is a hulking four-door coupe with a long wheelbase and wide track, delivering drama in both looks and speed. It is thirsty at an EPA-rated 17 mpg combined, but that is the trade-off for such power. For enthusiasts, the real draw is its tuneable S63 engine, where the aftermarket reports over 700 wheel horsepower on stock internals, turning an already quick car into a supercar-level rocket.
Who Each Coupe Suits And How To Think About Depreciation
High-end car bargains appear when luxury car depreciation strips away the initial premium, leaving you with flagship engines, advanced tech, and prestige badges at a much lower entry point. The C217-generation AMG S63 Coupe suits buyers who care most about ultra-luxury comfort, quiet cross-country capability, and effortless speed, and who can comfortably budget for higher maintenance and consumable costs like tires, brakes, and complex air suspension components. It is the more elegant, relaxed choice that still packs serious pace. The BMW M8 Gran Coupe fits drivers who want a more extroverted, hardcore feel, four doors, and tuning potential that can reach over 700 wheel horsepower on stock internals. Its depreciation makes it a compelling high-performance bargain for those willing to accept higher fuel use and a bolder design. In both cases, the biggest financial hit has already happened, so you get the performance and luxury while skipping the new-car price shock.
Buy if / Skip if
- Buy the Mercedes-AMG S63 Coupe if you want an ultra-luxury grand tourer with hand-built twin-turbo V8 power and Airmatic air suspension comfort.
- Skip the Mercedes-AMG S63 Coupe if you are not prepared to pay premium prices for tires, brakes, and potential air suspension repairs.
- Buy the Mercedes-AMG S63 Coupe if you want flagship-level tech and comfort with more accessible parts, maintenance costs, and reliability than more exotic ultra-luxury coupes.
- Skip the BMW M8 Gran Coupe if you are concerned about higher fuel consumption, as its 4.4-liter V8 is rated at 17 mpg combined.
- Buy the BMW M8 Gran Coupe if you want a depreciated super-sedan with sub-three-second 0–60 mph potential, strong grip, and huge tuning headroom.
- Skip the BMW M8 Gran Coupe if you prefer understated styling and a smaller footprint; its long, wide body and bold look may feel too imposing.
