MX-5 NB CHASSIS RAIL RUST — WHAT TO CHECK BEFORE BUYING

Buying an MX-5 NB? Look beyond the paintwork. Front chassis rail corrosion can hide beneath a tidy exterior, making a proper inspection essential. This guide explains what to look for, what to ask about previous repairs and when to get a specialist involved.

MX-5 NB Chassis Rail Rust

A shiny body doesn’t tell you everything about an NB. Front chassis rail corrosion deserves a proper inspection before you hand over your money.

Where’s the problem?

The front chassis rails are structural sections around the engine bay. Corrosion can develop between their metal layers, so the visible outside doesn’t always reveal the full extent of the damage.

What should you check?

Look for swelling, flaking metal, splits and previous repairs. Ask for clear photographs and invoices if welding has already been done. Fresh coating alone doesn’t demonstrate that the metal underneath is sound.

Arrange an inspection with an MX-5 specialist who can properly assess the rails. Include the sills and rear arches in the inspection too.