Second Generation NB (1998-2005)

The refined evolution of the iconic roadster

The Mazda MX-5 NB represented a mature evolution of the original concept, combining the pure character of the NA with significant improvements in power, refinement, and safety features.

Overview

The NB generation was produced between 1998 and 2005 and built upon the successful foundation of the NA. It maintained the lightweight, rear-wheel-drive philosophy while introducing a more powerful engine, redesigned interior, and modern safety features.

Key Statistics:

  • Production: 1998-2005
  • Total units: 215,000
  • Weight: 1,065-1,120 kg
  • Configuration: Front-engine, rear-wheel drive

Sub-Generations

NB1 (1998-2000)

The first NB introduced the more powerful 1.8L BP-VE engine and slightly more aggressive exterior design while maintaining the essential MX-5 character.

Engine: BP-VE 1.8L DOHC Power: 140 hp / 104 kW Torque: 165 Nm Weight: 1,065 kg

NB2 (2001-2005)

The facelift model brought an updated engine with VVT, improved interior, and the iconic MX-5 "curve hunter" with enhanced aerodynamic features.

Engine: BP-VE 1.8L DOHC with VVT (Variable Valve Timing) Power: 146 hp / 109 kW Torque: 167 Nm Weight: 1,100-1,120 kg

Technical Highlights

Chassis

  • Double-wishbone front and rear suspension
  • Optional Torsen limited-slip differential
  • Four-wheel ventilated disc brakes
  • Electric power steering (from 2001)
  • Reinforced chassis compared to NA

Transmission Options

  • 5-speed manual (standard)
  • 6-speed manual (from 2001, optional)
  • 4-speed automatic (optional)

Distinctive Features

  • Pop-up headlights removed due to safety regulations
  • Fixed headlights with larger glass area
  • Completely redesigned interior
  • Dual airbags standard
  • Near 50/50 weight distribution

NB Innovations

Enhanced Engine

The 1.8L BP-VE engine delivered significantly more power than the NA8, with better throttle response and more usable torque characteristics for daily driving.

Advanced Safety

  • Standard dual front airbags
  • Improved crumple zones
  • Pretensioner seatbelts
  • Optional ABS braking system

Interior Refinement

  • Improved driver ergonomics
  • Higher quality materials
  • Enhanced air conditioning system
  • Slightly more interior space

Common Issues & Maintenance

Known Problems

  • Rust: Wheel wells, sills, and door frames (less than NA)
  • Cooling system: Radiator and thermostat issues
  • Transmission: 2nd gear synchros (5-speed)
  • Differential: Noise in high-mileage differentials

Maintenance Schedule

  • Oil changes every 8,000 km
  • Timing belt every 100,000 km
  • Brake fluid every 2 years
  • Differential oil every 60,000 km

What Makes It Special

The NB perfected the original MX-5 formula by adding usable power while keeping weight under control. The fixed headlights gave it a more modern and aggressive appearance, while the improved interior made it more comfortable for daily use.

The introduction of the 6-speed transmission in 2001 improved both highway fuel economy and the shifting experience. The NB is often considered the perfect balance between the pure character of the NA and modern refinement.

Notable Special Editions

  • 10th Anniversary Edition (1999): Exclusive Sapphire Blue Mica paint
  • SE (Special Edition): Premium features and unique colors
  • Mazdaspeed MX-5 (2004-2005): Limited turbo version for US market

Market Position

The NB was well-received by both critics and enthusiasts, praised for maintaining the MX-5's essence while adding necessary refinement. Today, good NB examples are valued between $10,000-$20,000, with special editions commanding premium prices.

The NB proved that evolution could improve upon a classic design without losing its soul, setting a precedent for future MX-5 generations.