Finding a Mercedes Benz S65 AMG parked on a Buenos Aires street or listed within local Argentine automotive circles is an extraordinary sight. High import tariffs, stringent bureaucratic vehicle registration laws, and a heavy tax burden on luxury goods mean that ultra-exclusive twelve-cylinder German flagships rarely reach the country. For collectors who manage to acquire one, this machine represents the peak of old-world engineering combined with clandestine exclusivity.
Operating a twin-turbocharged V12 super-sedan in South America presents distinct hurdles that ordinary luxury car owners never face. From sourcing specialized cooling components to navigating restrictive foreign exchange controls, keeping such a rare specimen on the road requires serious dedication and deep pockets. This review breaks down what makes this machine unique, why finding one locally is so difficult, and what living with a V12 Mercedes-Benz entails.
Understanding the V12 Powerplant
At the core of the S65 AMG sits the handcrafted M279 6.0-liter twin-turbocharged V12 engine. Unlike the more common V8-powered S63 models, which rely on agility and exhaust bark, the S65 was engineered for effortless, locomotive-like thrust. It outputs 621 horsepower and a monumental 738 lb-ft of torque, delivered smoothly through the rear wheels via a robust automatic transmission setup.
The engine block utilizes lightweight aluminum-alloy construction paired with forged pistons and twin water-to-air charge air coolers. Driving it feels entirely different from modern electric or turbocharged six-cylinder performance cars. Power arrives instantly without a hint of lag, pushing the heavy chassis forward with terrifying composure. In a country like Argentina, where highway infrastructure varies wildly outside major toll roads like the Autopista Panamericana, this engine rarely gets stretched past a fraction of its true potential.
Why the S65 AMG is Rare in Argentina
Argentina's automotive market operates under unique economic and legal constraints that heavily penalize ultra-luxury imports. Importing a vehicle privately or through official channels triggers steep import duties, luxury internal taxes (known locally as impuesto al lujo), and unpredictable foreign currency exchange regulations.
Because the original sticker price of an S65 AMG in international markets crossed the $220,000 threshold, adding Argentine import duties and bureaucratic fees often doubled or tripled the final acquisition cost. Consequently, very few original buyers checked the box for the V12 flagship when ordering through local dealerships or private import brokers. Most units found in Buenos Aires arrived via diplomatic channels, specialized collectors, or rare individual import permits granted under specific legal frameworks.
- Import Tariffs: High cumulative customs taxes often add over 100% to the base vehicle value upon entry.
- Parts Logistics: Local dealerships do not stock bespoke V12 engine components, meaning every gasket or sensor must be imported independently.
- Fuel Quality: High-octane premium fuel is mandatory to prevent pre-detonation, limiting travel flexibility to remote provinces.
Maintenance and Ownership Reality
Owning an aging V12 Mercedes-Benz outside of Europe or North America tests the patience of any enthusiast. The car features complex hydraulic Magic Body Control suspension systems, miles of wiring harnesses, and dual engine control units. When something fails, local mechanics familiar with standard compact hatchbacks cannot simply plug in a generic OBD2 reader and clear a code.
Specialized diagnostic tools like Star Diagnosis are mandatory. Furthermore, rubber bushings, air suspension struts, and ignition coils degrade faster under extreme temperature swings and high humidity. Sourcing these replacement parts requires navigating international shipping lanes, paying heavy customs clearance fees, and waiting weeks for components to clear Buenos Aires port customs.
Frequently Asked Questions
How much fuel does the S65 AMG consume in city driving?
In heavy urban traffic, expect fuel consumption to easily exceed 18 to 20 liters per 100 kilometers. The heavy V12 engine requires substantial fuel delivery to idle and move its two-ton frame through congested streets.
Is the S65 AMG faster than the S63 AMG?
Straight-line acceleration is remarkably similar because both are traction-limited at launch, but the S65 pulls significantly harder at highway speeds. The V12 engine delivers effortless mid-range acceleration that feels endless compared to its V8 sibling.
Can local mechanics in Argentina service this engine?
General mechanics will struggle with the cramped engine bay and complex twin-turbo plumbing. Only specialized independent European car shops in major hubs like Buenos Aires possess the tools and expertise required for major overhauls.
What are common failure points on the M279 V12 engine?
Ignition coil packs and voltage transformers are known to fail over time, leading to misfires. Cooling system leaks around the intercooler pumps also require regular inspection to prevent thermal degradation.
