Mazda MX-5 II (NB) (1998 – 2005)

Reliability score : 8.2/10

The Mazda MX-5 Generation II, internally known as the NB, was introduced in 1998 as the successor to the wildly successful NA. Forced to abandon the iconic pop-up headlights due to stricter pedestrian safety regulations, the NB adopted a more aerodynamic, curvaceous design inspired by the third-generation RX-7. It brought significant refinements: a standard glass rear window with a defroster, a slightly wider track, improved aerodynamics, and more powerful engines. In 2001, the model received a major facelift known as the NBFL (NB2 in North America). This update introduced a stiffer chassis, updated interior styling, improved seats, larger 'Sport' brakes on higher trims, and Variable Valve Timing (S-VT) for the 1.8L engine. While mechanically bulletproof, the NB generation is notoriously p

✅ Strengths

Sublime chassis balance and driving dynamics (50:50 weight distribution).
One of the best manual gearboxes ever made (especially the 6-speed).
Engines are mechanically bulletproof and easily handle high mileage.
Massive aftermarket support and cheap replacement parts.
Standard glass rear window (huge upgrade over the NA's plastic window).

⚠️ Weaknesses

CATASTROPHIC RUST ISSUES: Front chassis rails, rear sills, and wheel arches.
Interior space is very cramped for drivers over 1.85m (6ft 1in).
High noise levels at highway speeds (wind and road noise).
Prone to water leaks if soft top drains are not regularly cleared.
Factory 1.8L Turbo (Mazdaspeed) suffers from a poor factory ECU calibration.

🎯 Verdict

The Mazda MX-5 NB is arguably the sweet spot of the Miata lineage: it retains the raw, analog feel of the NA while offering better aerodynamics, a stiffer chassis, and more refined engines. Mechanically, it is one of the most reliable sports cars ever built. However, its reputation is severely tarnished by terminal rust issues, particularly in the front chassis rails and rear sills. Buying Advice: Do not buy an NB based on mileage or engine alone; buy entirely based on the condition of the chassis. A pristine, rust-free chassis with a blown engine is a better purchase than a rusty car with a perfect engine. If you find a clean, rust-free example (or one that has been professionally repaired with photographic evidence), buy it immediately and apply cavity wax (e.g., Fluid Film, Dinitrol) to preserve it.