The B7 Audi RS4 – Was This The Best Of RS?

Why It’s One of the Best RS Cars Ever Made

The Audi RS4 B7, produced from 2006 to 2008, stands out as one of the best RS cars ever made. This generation of the RS4 marked a significant step forward for Audi’s high-performance division, combining advanced engineering with exceptional performance and everyday usability. It’s revered for its powerful naturally aspirated V8 engine, Quattro all-wheel-drive system, and its ability to deliver both thrilling driving dynamics and comfortable daily driving.

One of the main reasons the RS4 B7 is so highly regarded is its unique position in the market. At a time when competitors were increasingly turning to turbocharged engines, the RS4 B7 stuck with a high-revving naturally aspirated V8, offering a driving experience that is both raw and exhilarating. Additionally, the RS4 B7 was available in sedan, Avant (wagon), and cabriolet body styles, providing versatility that few high-performance cars could match.

What Makes the Car So Great

Engine and Performance

The heart of the RS4 B7 is its 4.2-liter naturally aspirated V8 engine. This powerplant produces 420 horsepower and 317 lb-ft of torque, with a redline of 8,250 RPM. The engine’s responsiveness, linear power delivery, and intoxicating exhaust note make it one of the most thrilling engines Audi has ever produced.

Quattro All-Wheel Drive

Audi’s Quattro all-wheel-drive system is a key component of the RS4 B7’s performance. It provides exceptional traction and stability, allowing the car to put its power down effectively in all conditions. This system, combined with a 40:60 front-to-rear torque split, gives the RS4 B7 a rear-wheel-drive feel, enhancing its handling dynamics.

Suspension and Handling

The RS4 B7 features a Dynamic Ride Control (DRC) suspension system, which uses diagonally linked dampers to reduce body roll and pitch. This system, along with a sport-tuned suspension and wider track, gives the RS4 B7 sharp and precise handling, making it a joy to drive on twisty roads.

Design and Build Quality

The RS4 B7’s design is both aggressive and elegant. It features wider wheel arches, a distinctive front grille, and sporty bodywork that sets it apart from the standard A4. Inside, the cabin is well-appointed with high-quality materials, sport seats, and RS-specific details that create a luxurious yet performance-focused environment.

Practicality

Despite its performance credentials, the RS4 B7 remains a practical car. The Avant version, in particular, offers generous cargo space and the versatility of a wagon, making it a perfect blend of performance and practicality.

What the Driving Experience Is Like

Driving the Audi RS4 B7 is an experience that combines raw power with refined handling. The 4.2-liter V8 engine roars to life with a deep, throaty growl, and as you push the throttle, it delivers a surge of power that feels both linear and exhilarating. The high-revving nature of the engine, with its 8,250 RPM redline, encourages you to explore the upper limits of the rev range, where the engine truly comes alive.

The six-speed manual transmission is a joy to use, with precise and satisfying gear shifts that enhance the driving experience. The clutch is well-weighted, and the shifter’s short throws make it easy to shift quickly and accurately.

The RS4 B7’s handling is sharp and responsive, thanks to its sport-tuned suspension and Quattro all-wheel-drive system. The car feels planted and stable, even at high speeds, and the steering is communicative, providing excellent feedback from the road. The Dynamic Ride Control system helps to keep the car flat through corners, enhancing its agility and making it a joy to drive on twisty roads.

Despite its sporty nature, the RS4 B7 remains comfortable and composed on longer journeys. The ride quality, while firm, is not overly harsh, and the interior is well-insulated from road and wind noise. The sport seats provide excellent support and comfort, making the RS4 B7 a great choice for both spirited driving and everyday use.

How It Compares to the Modern RS4

Comparing the RS4 B7 to the modern RS4 highlights the evolution of Audi’s performance models. The latest RS4, the B9 generation, offers more advanced technology, improved performance, and greater efficiency, but the RS4 B7 retains a unique charm that many enthusiasts still appreciate.

Performance

The modern RS4 B9 uses a 2.9-liter twin-turbo V6 engine that produces 444 horsepower and 443 lb-ft of torque, providing quicker acceleration and higher top speeds than the RS4 B7. However, the naturally aspirated V8 of the RS4 B7 delivers a more visceral and engaging driving experience, with a linear power delivery and a high-revving character that the turbocharged engine cannot match.

Handling and Driving Dynamics

Both generations offer exceptional handling, but the RS4 B7’s smaller size and lighter weight give it a slight edge in agility and responsiveness. The modern RS4 benefits from advanced suspension and electronic aids, enhancing its capabilities but potentially making the driving experience feel less raw and connected compared to the RS4 B7.

Design and Features

The modern RS4 features a more aggressive and modern design, with advanced technology and a more luxurious interior. The RS4 B7, while slightly more understated, still looks aggressive and purposeful, with a cabin focused on the essentials and providing everything needed for an engaging driving experience without unnecessary distractions.

Transmission

The RS4 B7 is available only with a six-speed manual transmission, which is a key part of its appeal to driving purists. The modern RS4 comes with an eight-speed automatic transmission, catering to a broader range of buyers but possibly diluting the purist appeal slightly.

Common Issues and Faults to Look Out For on the RS4 B7

Despite its many strengths, the Audi RS4 B7 has a few common issues that potential buyers should be aware of:

• Carbon Build-Up: The direct injection system in the RS4 B7’s V8 engine can lead to carbon build-up on the intake valves, resulting in reduced performance and rough idling. Regular cleaning or walnut blasting is recommended to keep this issue in check.
• DRC Suspension Issues: The Dynamic Ride Control system can develop leaks and lose pressure over time, leading to a degradation in ride quality. Replacing the DRC components can be expensive, but aftermarket options are available.
• Timing Chain Tensioners: The V8 engine uses timing chains instead of belts, and the tensioners can wear out over time, leading to a rattling noise at startup. Replacing the timing chain tensioners is a complex and costly job.
• Clutch Wear: Given the high-performance nature of the RS4 B7, the clutch can wear out more quickly than in less powerful cars. Pay attention to signs of clutch slippage and be prepared for a potential replacement.
• Oil Leaks: Oil leaks from the valve cover gaskets and oil filter housing are common in the RS4 B7. Regular inspection and maintenance are required to address these leaks promptly.
• Brake Wear: The high-performance brakes on the RS4 B7 can wear out relatively quickly, especially if the car is driven hard. Be prepared for more frequent brake pad and rotor replacements.

General Stats and FAQs

• Engine: 4.2L naturally aspirated V8
• Power: 420 hp at 7,800 RPM
• Torque: 317 lb-ft at 5,500 RPM
• 0-60 mph: Approximately 4.6 seconds
• Top Speed: Electronically limited to 155 mph
• Transmission: 6-speed manual
• Weight: Around 3,800 lbs
• Fuel Economy: Approximately 13 mpg city / 20 mpg highway

FAQs:

• What is the redline of the Audi RS4 B7? The V8 engine redlines at 8,250 RPM.
• Is the Audi RS4 B7 reliable? With proper maintenance, the RS4 B7 can be reliable, but it has several known issues that need regular attention.
• How much does an Audi RS4 B7 cost today? Prices vary widely based on condition, mileage, and market demand, but expect to pay anywhere from $25,000 to $40,000 for a well-maintained example.
• How rare is the Audi RS4 B7? The RS4 B7 was produced in limited numbers, making it relatively rare and sought after by enthusiasts.

In conclusion, the Audi RS4 B7 remains a standout model in Audi’s RS lineup, celebrated for its engaging driving experience, balanced performance, and practicality. Despite its few common issues, it continues to be a sought-after model that offers a unique and thrilling driving experience unmatched by many modern cars. Owning and driving one is not just about nostalgia—it’s about experiencing one of the finest performance sedans Audi has ever made.