

Audi, A6, C4, S6 4.2 Quattro (1994-) Little Known Facts
- The Audi A6 (C4) S6 4.2 Quattro was produced from 1994 to 1997.
- It features a 4.2-liter V8 engine producing 250 horsepower.
- The car has a top speed of 155 mph electronically limited, but it can reach up to 174 mph without restriction.
- Power is transmitted through a 6-speed manual or 5-speed automatic transmission to all four wheels via the Quattro permanent AWD system.
- The S6 model was based on the Audi C4 platform and shared some mechanical components with the A8, but it had a unique exterior and interior design.
- It has a total output of 250 horsepower and 280 lb-ft of torque from its V8 engine.
- The Quattro system is biased towards rear-wheel drive under normal conditions, but can dynamically transfer up to 70% of power to the front wheels as needed.
- The S6 features ventilated disc brakes on all four corners with a dual-piston design at the front and single-pistons in the rear.
- Ground clearance is approximately 5 inches (127 mm).
- It had an independent suspension system, comprising MacPherson struts for the front wheels and a multi-link setup for the rears.
- The curb weight of the S6 is around 3,855 lbs (1,750 kg) with the manual transmission.
- Fuel economy varies, but the US EPA estimates approximately 16 city and 24 highway miles per gallon with the automatic transmission.
- Rear seats have a fold-down option for increased cargo space when needed.
- The car had a slightly modified interior compared to other A6 variants due to its performance-oriented nature.
- Audi produced approximately 8,000 units of the S6 4.2 Quattro during its production run.
- Despite being over two decades old, many original S6 models remain available on used car markets and enthusiast communities.
- Various engine modifications have been developed for enthusiasts seeking to increase power output beyond factory specifications.
- A 5-cylinder turbocharged version of the S6 was also produced in limited quantities but is not as well-documented or desirable among collectors.
- Early models had a unique "S" emblem on the front grille, distinguishing them from other A6 variants.
- Prices for used S6 4.2 Quattros vary significantly depending on condition, mileage, and location, with prices ranging from around $10,000 to over $30,000.
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