Mazda Miata NB (1999-2005 US model years)
| Years | 1999-2005 (US model years; NB debuted in 1998 as a 1999 model) |
|---|---|
| Trims | Base, sport package, special editions, 2004-05 Mazdaspeed (turbo, ~178 hp). 6-speed was special-edition/option in 1999-2000 and became a regular option for 2001. |
| Engine | 1.8L; NB1 (1999-2000) and NB2 (2001-2005, with variable valve timing). Mazdaspeed 2004-05: turbo, non-VVT head. |
| Notes | NB1 and NB2 differ in ignition (NB1 coil packs vs different NB2 system) and other details. Last two years: 16-inch wheels standard and 6-speed rear gearing 3.90 instead of 4.10 (per Road & Track). |
Generation facts are drawn from: Road & Track (Jun 2016), MX-5 Miata Forum.
Known issues (overview)
- NB1 ignition coil packs wear out and can damage the cat Reported
- Thrust-bearing failure in some 1999-2000 cars Confirmed
- Clutch chatter in 2001 and some 2002 cars Reported
- Plastic radiator end tanks go brittle; airflow blockage Reported
- Corroded coolant mixing-manifold elbow (NB1) Limited
- Crank and cam position sensor problems Reported
- Rust (front side members, East Coast cars) Reported
- EGR codes and idle drop Limited
Best mods by goal
- First steps (1)
- Suspension (1)
- Wheels & tires (1)
- Drivetrain (1)
- Cooling (1)
- Power (1)
Will it fit?
| Part | Result | Years | Confidence |
|---|---|---|---|
| OEM NB wheel (14x6 or 15x6, +40) | Specification | 1999-2005 | Reported |
| 15x7 +38 wheel with 205/50R15 tire | Reported to fit | 1999-2005 | Reported |
| 15x9 +36 wheel with 225/45R15 tire | Fits with extra parts or work | 1999-2005 | Reported |
| Tein Street Basis Z coilovers | Reported to fit | 1999-2005 | Limited |