Description

Rust Problems in Mazda MX-5 NB and NBFL (1998-2005)

One of the most common problems with the Mazda MX-5 NB and NBFL (second generation, 1998-2005) is rusted chassis rails (also called frame rails). These rails, located at the front of the vehicle, are crucial for the structural integrity and safety of the car. Unfortunately, these models suffer greatly from rust, especially in the wheel wells.

Have you been told during an MOT inspection or maintenance check that your chassis has rusted through? That can be quite a shock. Fortunately, we have a durable and safe solution to get your MX-5 back in top condition.

Why Do the Chassis Rails of the MX-5 NB and NBFL Rust?

The main reason for rust formation is the design of the frame rails. Mazda chose a two-layer steel construction for the MX-5 NB. This has advantages for the chassis rigidity and crash safety, but it also causes a major problem.

The Cause of Rust: Trapped Water

Moisture and dirt can accumulate between the two steel plates. Because there is no drainage, this water remains stagnant and starts to corrode the metal from the inside. Eventually, this leads to severe rust damage, which is often only noticed when it’s too late.

Why Doesn’t the MX-5 NA (1st Generation) Have This Problem?

The first generation MX-5 NA (1989-1997) – recognizable by its iconic pop-up headlights – doesn’t have two-layer frame rails, but only a single layer of steel. This prevents moisture from being trapped, which is why rust formation is much less common.

This is exactly why we at LucaCarMods have developed a smart solution: we replace the rust-prone rails of the NB with a strong, single-layer steel construction, similar to the NA.

Our Repair Method – Durable and MOT-Approved

At LucaCarMods, we have a proven repair method that ensures your Mazda MX-5 NB is safe and rust-free again.

Step 1: Removal of Rust and Affected Chassis Parts

• The entire rusted section of the front chassis rails is removed.
• The two-layer steel is completely cut away, eliminating all corrosion.

Step 2: Welding in a High-Quality Repair Panel

• We install a strong replacement panel with a single-layer steel construction.
• This design prevents moisture from accumulating again.
• The repaired chassis is now stronger and more durable than the original.

Step 3: Rust Protection for Maximum Lifespan

• Exterior: Treated with a two-component polyurethane coating, which provides excellent protection against stone chips, moisture, and road debris.
• Interior: Sealed with a cavity wax coating, which penetrates deep into the hollow spaces and prevents future rust formation.

Costs and Time: What Can You Expect?

This high-quality chassis rail repair is carried out for a fixed price of €1150,- (incl. VAT) (MX-5 without air conditioning) and €1350,- (incl. VAT) (MX-5 with air conditioning)

• Duration: The repair takes an average of 2 days.
• MOT-approved: After repair, the car fully complies with safety requirements again.
• Durable: The use of high-quality coatings and materials significantly extends the lifespan of the chassis rails.

Why Choose LucaCarMods?

• Specialist in Mazda MX-5 repairs – We have years of experience with this specific problem.
• Durable solution – Our method prevents the problem from recurring.
• Quality and safety are paramount – We only use high-quality materials and coatings.
• Customer satisfaction guaranteed – Hundreds of satisfied MX-5 owners have gone before you.

Schedule Your Repair Today

Don’t wait too long to address this problem. The longer you wait, the worse the rust becomes. Do you want to bring your Mazda MX-5 NB back to top condition?

• Schedule an appointment directly by email or phone!
• Questions? Contact Us!