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Audi Audi 90 (B2)

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Audi 90 (B2): A Comprehensive Guide

The Audi 90, specifically referring to the B2 generation (Typ 81/85), represents a significant chapter in Audi's history. It was more than just a trim level; it was a distinct model designed to elevate Audi's image and appeal to a more discerning buyer. Launched in the mid-1980s, the Audi 90 served as the top-of-the-line version of the Audi 80 (also known as the Audi 4000 in North America), occupying the compact executive car segment. Its upgraded features, more powerful engines, and premium styling set it apart from its more humble sibling and helped to establish Audi as a serious contender in the luxury car market.

Generations

Audi 90 B2 (Typ 81/85) - 1984-1987 (North America), 1984-1987 (Europe)

  • Key Changes: This single generation of the Audi 90 on the B2 platform was marked by several notable upgrades over the Audi 80/4000. These included:
  • Engine Upgrades: The most significant difference was the availability of larger, more powerful inline five-cylinder engines. This provided significantly improved performance.
  • Interior Refinements: The interior received a substantial upgrade with more luxurious trim, higher-quality materials, and more standard features. This included improved seating, better sound insulation, and additional convenience items.
  • Exterior Styling: While sharing the basic B2 platform, the 90 featured distinct styling cues, such as revised headlights, taillights, and trim, giving it a more upscale appearance. This often included chrome or bright trim pieces.
  • Suspension & Brakes: Minor tweaks were made to the suspension for improved handling, and larger brakes were often fitted to handle the increased power.

Reliability & Common Issues

The Audi 90 B2, like many cars of its era, has its share of potential problems. Careful inspection and maintenance records are crucial when considering a purchase.

Engine

  • Inline Five-Cylinder Engine Issues: The five-cylinder engines, while robust, can suffer from oil leaks, particularly around the valve cover and rear main seal. Timing belt replacement is critical; failure can lead to catastrophic engine damage. Vacuum leaks are also common, affecting performance and fuel economy. Cylinder head cracks can occur on higher mileage examples.
  • Fuel Injection Systems: Older Bosch CIS (Continuous Injection System) can be challenging to diagnose and repair. Components such as the fuel distributor and fuel pumps are prone to failure.

Transmission

  • Manual Transmissions: Generally reliable, but synchros can wear, especially in second gear. Listen for grinding noises during gear changes.
  • Automatic Transmissions: Check for smooth shifting. Slipping or harsh shifts indicate potential problems. Regular fluid changes are vital.

Suspension & Brakes

  • Suspension Components: Bushings, ball joints, and tie rod ends wear over time. Expect to replace these components, especially on high-mileage vehicles. Shocks and struts should be inspected for leaks and proper damping.
  • Brakes: Brake lines can corrode and leak. Check the condition of the brake rotors and pads. ABS systems (if equipped) can develop problems, particularly with the wheel speed sensors.

Electrical System

  • Wiring: Wiring harnesses can become brittle and crack, leading to electrical shorts and malfunctions.
  • Switches & Sensors: Window switches, headlight switches, and other electrical components can fail due to age.
  • Corrosion: Check for rust, particularly in the wheel wells, floor pans, and around the suspension mounting points. This is a significant concern in areas with harsh winters.

Interior

  • Upholstery: The interior materials can show wear and tear, especially on the seats and door panels. Sun damage can cause cracking and fading.
  • Climate Control: The climate control systems can be complex and prone to failures. Issues with the heater core, blower motor, and AC compressor are common.

Driving Experience

The Audi 90 B2 offers a unique driving experience that combines a comfortable ride with capable handling. The inline five-cylinder engine delivers a distinctive sound and a surprisingly punchy performance, even by today's standards.

Pros:

  • Smooth Ride: The suspension provides a comfortable ride, making it suitable for long-distance driving.
  • Capable Handling: The quattro all-wheel-drive system (if equipped) provides excellent grip and handling in all weather conditions.
  • Unique Engine Sound: The inline five-cylinder engine produces a distinctive and pleasing sound.
  • Timeless Design: The styling has aged gracefully, and the car still looks attractive.
  • Relatively Simple Mechanics: Compared to modern cars, the Audi 90 B2 is relatively simple to work on, making it a good choice for DIY enthusiasts.

Cons:

  • Age: The car is over 30 years old, so expect to deal with age-related issues.
  • Availability of Parts: Some parts can be difficult to find, particularly trim pieces and specific interior components.
  • Fuel Economy: Fuel economy is not great by modern standards.
  • Potential for Corrosion: Rust can be a significant issue, especially in areas with harsh winters.

Buying Advice

If you're considering purchasing an Audi 90 B2, here's some advice:

What to Look For:

  • Well-Maintained Examples: Look for cars with complete service records, showing regular maintenance and repairs.
  • Quattro Models: The quattro all-wheel-drive system is a desirable feature, providing improved handling and traction.
  • Low Mileage: Lower mileage examples are generally in better condition.
  • Original Condition: Cars that are in original condition, without modifications, are often more desirable.

What to Avoid:

  • Rust Buckets: Avoid cars with significant rust, as repairs can be costly and time-consuming.
  • Poorly Maintained Examples: Cars with neglected maintenance are likely to have a host of problems.
  • Heavily Modified Cars: Modifications can negatively impact reliability and resale value.
  • Cars with Unknown History: Avoid cars with missing or incomplete service records.

Specific Years:

  • Any year from the 1984-1987 model run can be a good choice, provided it has been well maintained. The later years of the production run might have benefited from minor improvements.

Final Thoughts:

The Audi 90 B2 is a rewarding car to own, offering a unique driving experience and a timeless design. However, it's essential to do your research and be prepared to address age-related issues. With careful inspection and maintenance, you can enjoy this classic Audi for many years to come.

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