CARFIX

Fiat 131 D (1978–1984)

The Fiat 131, especially the revered Supermirafiori, once graced the streets of New Zealand in large numbers. Available as both a sedan and a wagon, it provided a stylish yet practical alternative to its many contemporaries. For potential owners of this Italian classic today, it’s worth understanding what makes the 131 a lasting favorite, as well as the common pitfalls, maintenance tips, and how to keep this relic running smoothly for years to come.

Parts for the Fiat 131 D

Known issues

• Rust: As with many Italian cars of this era, rust is a major concern. Check sills, wheel arches, and floor pans.
• Electrical Problems: Lucas or Magneti Marelli systems can be temperamental.
• Engine Maintenance: Regular servicing is essential to prevent issues.
• Interior Wear: Interior trim and upholstery can be prone to wear and tear.

WOF tips

• Rust: Extensive rust will result in a WOF failure. Pay close attention to structural areas.
• Lights: Ensure all lights are functioning correctly. Check for faulty wiring.
• Brakes: Check brake lines, hoses, and pads/shoes for wear and leaks.
• Suspension: Worn suspension components can lead to a WOF failure.

About the Fiat 131 D

The Fiat 131 came with several engine options and trim levels, with the Supermirafiori versions gaining popularity due to their improved features and elegant styling. An attractive combination of sedan and wagon form factors introduced broader appeal, allowing families more flexibility. Keeping this classic on the road is relatively straightforward thanks to the availability of parts and simple mechanics. However, there are vital elements requiring regular attention. Notably, the cooling system is critical, with recommended inspection at 150,000 km—make sure to check your water pump, thermostat, and radiator hoses to avoid overheating. [This naturally links to /shop/cooling]

In terms of safety, regular braking maintenance is non-negotiable; expect to replace pads and rotors ideally every 30,000 to 50,000 km depending on driving conditions. If you're experiencing issues, our braking products will ensure your Fiat stops as reliably as it goes. [Link to /shop/braking] For optimal engine health, keep the oil and air filters fresh—they should be replaced every 10,000 km to maximize longevity and performance. [This links to /shop/filtration] Alongside simple service routines, addressing known issues early can keep your Fiat 131 a pleasure to drive.

Questions owners ask

How often should I change the oil and air filter on my FIAT 131 1978–1984?
To keep your FIAT 131 running smoothly, it's recommended to replace the oil and air filters every 10,000 km. This will help maximize engine longevity and performance.
When should I inspect the cooling system on my FIAT 131?
It's crucial to inspect the cooling system on your FIAT 131 around the 150,000 km mark. Pay close attention to the water pump, thermostat, and radiator hoses to prevent overheating.
How often should I replace the brake pads and rotors on my FIAT 131?
Brake pad and rotor replacement on your FIAT 131 should ideally be done every 30,000 to 50,000 km, depending on your driving conditions. Regular braking maintenance is essential for safety.
What are the common rust areas I should check on my FIAT 131 for a WOF?
For a WOF, pay close attention to rust on the sills, wheel arches, and floor pans of your FIAT 131. Extensive rust in these structural areas will likely result in a WOF failure.
What electrical issues should I be aware of with my FIAT 131?
The FIAT 131, particularly models with Lucas or Magneti Marelli electrical systems, can be prone to temperamental electrical issues. Regular checks and maintenance are recommended.
Where can I get brake pads for my FIAT 131 1978–1984 in NZ?
CARFIX stocks 23 SKUs for the FIAT 131, including braking products to ensure your FIAT stops as reliably as it goes. Check out our range at /shop/braking.
What should I check on my FIAT 131's lights for a WOF?
Ensure all lights on your FIAT 131 are functioning correctly for a WOF. Check for faulty wiring and replace any blown bulbs. Non-functioning lights will cause a WOF failure.