CARFIX

Audi 100 S4 Turbo (1991–1994)

The Audi 100 S4 Turbo, part of the C4 generation from 1991 to 1994, is more than just a classic; it's a symbol of Audi's commitment to performance and luxury. With its exceptional Quattro all-wheel-drive system, robust turbocharged engine, and refined interior, this vehicle laid the groundwork for future Audi designs. Enthusiasts in New Zealand and beyond still celebrate the 100 S4 Turbo for its blend of style, power, and comfortable driving experience, making it a cherished choice for collectors and daily drivers alike.

Parts for the Audi 100 S4 Turbo

Known issues

Common issues with the Audi 100 include: 1. Electrical problems: Wiring can become brittle and connectors corroded, leading to intermittent faults. Central locking systems and electric window mechanisms are often problematic. 2. Cooling System: Radiators, hoses and water pumps can fail due to age. Overheating can cause significant engine damage, so proactive maintenance is vital. 3. Suspension wear: Bushings, ball joints, and shock absorbers will likely require replacement. Listen for clunking noises over bumps. 4. Quattro system (if equipped): The all-wheel-drive system is robust, but can suffer from worn viscous couplings or differential issues. 5. Fuel system: Fuel pumps and injectors can become clogged or fail after many years of service.

WOF tips

When it comes to WOF inspections, key areas of concern include: 1. Suspension: Check for excessive play in ball joints, worn bushings, and leaking shock absorbers. 2. Brakes: Inspect brake pads, rotors, and hoses for wear and leaks. The handbrake mechanism should also be checked. 3. Lights: Ensure all lights are functioning correctly, including headlights, taillights, brake lights, and indicators. 4. Tyres: Check for correct tread depth and any signs of damage. 5. Rust: Although body is galvanized, check body thoroughly for rust. Any structural rust will cause a failure. 6. Steering: Power steering leaks are very common, so check carefully.

About the Audi 100 S4 Turbo

Crafted with a galvanised steel chassis, the Audi 100 S4 Turbo offers decent rust protection, ensuring that these classics can endure New Zealand’s diverse driving conditions. Typical engine options included a responsive turbocharged inline-five, exemplifying Audi's engineering prowess. Owners should remember that like any classic, this vehicle requires preventative maintenance to stay in peak condition. Key components such as the water pump, thermostat, and radiator hoses should be inspected around the 150,000 km mark to avoid overheating issues. If you're noticing any signs of overheating or coolant leaks, don't delay in checking the Cooling parts. Likewise, electrical gremlins can emerge due to aging wiring; addressing these can save headaches down the road. Maintaining the braking system is crucial for both safety and performance, making our Braking services a priority. Regular oil changes will also help prolong engine life and improve performance. Make sure to keep an eye on the brake components, and consider scheduling a Front Brake Service or Rear Brake Service to ensure optimal stopping power. The Audi 100 S4 Turbo thrives under proactive care, and understanding its needs will not only enhance your driving experience but also preserve its legacy for years to come.

Questions owners ask

What are some common problems I might encounter with my 1991-1994 Audi 100 in New Zealand?
Common issues with the Audi 100 include electrical problems due to aging wiring and corroded connectors, cooling system failures (radiators, hoses, water pumps), suspension wear (bushings, ball joints, shock absorbers), potential Quattro system issues (if equipped), and fuel system problems (fuel pumps, injectors).
Where can I find replacement parts for my 1991-1994 Audi 100 in NZ?
CARFIX stocks 249 SKUs for the Audi 100 (1991-1994). You can find a range of parts, including cooling system components, brake parts, and more at Cooling parts and Braking services.
What should I pay attention to during a WOF inspection on my Audi 100?
During a WOF inspection, key areas of concern include the suspension (ball joints, bushings, shock absorbers), brakes (pads, rotors, hoses, handbrake), lights (headlights, taillights, brake lights, indicators), tyres (tread depth, damage), rust (especially structural rust), and steering (power steering leaks).
How often should I change the oil in my Audi 100?
The recommended service interval for the Audi 100 is 10,000km. Regular oil changes within this interval will help prolong engine life and improve performance.
My Audi 100 is overheating. What should I check?
Overheating in the Audi 100 is often due to cooling system issues. Inspect the water pump, thermostat, and radiator hoses, especially around the 150,000 km mark. Check for coolant leaks and consider replacing worn components to prevent engine damage. You can find cooling parts at Cooling parts.
Is the Audi 100 prone to rust?
The Audi 100's body is crafted with a galvanised steel chassis, which offers decent rust protection. However, it's still important to thoroughly check the body for rust during WOF inspections, especially any structural rust.
What kind of brake maintenance does my Audi 100 need?
Maintaining the braking system is crucial for the Audi 100. Regularly inspect brake pads, rotors, and hoses for wear and leaks. Consider scheduling a Front Brake Service or Rear Brake Service to ensure optimal stopping power.