In short
- Buy on shell condition and documented repairs before choosing an engine or trim level.
- Inspect rear sills, wheelarches, hood drains, damp, cooling, roof, and pop-up lamps.
- The builder offers the verified early 1.6 and later 1.8 UK catalogue specifications.
The pop-up headlights are very good at making a person forgive a bad sill. Do the viewing in the opposite order. Establish the car, inspect the shell, check where water has been, and only then decide whether you prefer the early 1.6 or the later 1.8.
Which Mazda MX-5 NA should you buy?
Buy the MX-5 NA with the best documented shell, not the engine you had decided on before the viewing. Corrosion and poor repairs can consume a cheap car. A sound 1.6 is a better buy than a patched 1.8, and the reverse is equally true.
The original car ran from 1989 to 1997, with UK sales beginning in 1990. Mazda now offers a restoration-parts programme for first-generation owners, but parts support does not turn concealed corrosion into a small job. Read the MOT history and invoices before you spend time on paint colour or special-edition trim.
Where should you check an MX-5 NA for rust?
Start at the rear sill ends and wheelarches, then look for damp inside the car and boot. The hood drains feed through this area. By the time a sill bubbles outside, the corrosion behind it can be further along than the paint suggests.
Look for the shape of an honest repair: photographs before the work, an invoice that says what metal was replaced, and the factory seams still present around it. Fresh underseal with no record deserves questions. So does a dry day offered as proof that the carpets do not leak.
Do not lift an NB front-chassis-rail checklist and assume it describes this car exactly. The MX-5 Owners Club discussion distinguishes that double-skin front-rail problem from the NA. On a Mk1, the rear sills and arches remain the first places I would spend the viewing.
What is the difference between the NA 1.6 and 1.8?
The verified catalogue 1.6 is the original 1989 to 1993 UK specification. The 1.8 covers 1994 to 1997 and adds power, torque, and weight. A later low-output 1.6 is not the same specification as the early 1.6 offered in the builder.
| Variant | Years | Power | Torque | Weight |
|---|---|---|---|---|
| 1.8 | 1994 to 1997 | 129 bhp | 152 Nm | 1014 kg |
| 1.6 | 1989 to 1993 | 113 bhp | 136 Nm | 955 kg |
- Engine
- 1.8 L BP-ZE inline-four
- Power
- 129 bhp
- Torque
- 152 Nm
- 0 to 60
- 8.7 sec
- Top speed
- 122 mph
These are bhp figures, not PS numbers relabelled as bhp. That distinction is small enough to look fussy and large enough for an owner to spot on a poster.
What should you check at an MX-5 NA viewing?
Check identity and history first, then the shell, water paths, cooling system, roof, and electrical items. Tick the list while you are beside the car. A completed list is not a substitute for a specialist inspection, but it makes omissions harder.
What changes when the car is a Eunos Roadster?
A Eunos Roadster is a Japanese-market first-generation car, so the same body does not guarantee the same UK specification. Check its identity, engine, equipment, import record, and rust protection as facts about that car.
The catalogue drawing can represent the shared body, but the printed figures still need to describe the engine selected. If your car is outside the two verified UK choices,send the details before ordering rather than choosing the nearest number.
Which sources support this guide?
Mazda UK supports the first-generation dates, UK introduction, layout, and official parts programme. Two detailed UK buyer guides support the inspection points. Every poster figure still comes from the signed-off catalogue file.
The supporting reading was Mazda UK’s first-generation history and restoration-parts announcement, plus the NA guides from Classic & Sports Car and Goodwood Classic Solutions. For another example of keeping a buyer’s guide tied to one drawn car, read the Nissan 350Z guide. When you are ready to see the NA in its own colour, the MX-5 builder is here.
Questions people actually ask
- What is the main problem with a Mazda MX-5 NA?
- Rust is the main buying risk on an MX-5 NA. Start with the rear sills and wheelarches, then check for damp, concealed repairs, and missing seams. A clean-looking outer panel does not prove the structure behind it is sound.
- Should I buy an MX-5 NA 1.6 or 1.8?
- Buy on condition first. The catalogue’s early 1.6 is lighter and makes 113 bhp, while its later 1.8 makes 129 bhp and more torque. Those figures describe the verified UK variants in this builder, not every later 1.6 or imported Eunos specification.
- Where does a Mk1 MX-5 rust?
- A Mk1 MX-5 commonly rusts around the rear sills and wheelarches, especially when the hood drains have been blocked. Look for bubbling, filler, lost factory seams, damp carpets, and fresh underseal without photographs showing what is beneath it.
- Is a Eunos Roadster the same as an MX-5 NA?
- A Eunos Roadster is the Japanese-market version of the first-generation car, but its exact engine, equipment, and history can differ from a UK MX-5. Check the individual car rather than assigning UK figures from its age or body shape alone.
Written by Jonathan in Derby. Last updated .