NA vs NB Miata: Which One Should You Buy?

Ask ten car people what your first project car should be and at least eight will say “Miata.” They’re not wrong. The original Mazda MX-5 Miata is light, rear-wheel drive, reliable, cheap to fix and supported by one of the biggest aftermarkets in the car world.

The question is which one. The first two generations, NA and NB, are the classic cheap Miatas, and they’re more alike than different. But the differences matter depending on what you want. Here’s the full breakdown.

The quick answer

• Get an NA (1990–1997) if you want pop-up headlights, the lightest and most raw driving feel, and the iconic look.
• Get an NB (1999–2005) if you want a little more power, a stiffer chassis, a glass rear window and slightly more modern manners.
• Get whichever one has less rust. Seriously. Condition beats generation every time.

NA vs NB at a glance

	NA (1990–1997)	NB (1999–2005)
Engines	1.6L (1990–93), 1.8L (1994–97)	1.8L
Power	116 hp (1.6), 128 hp (1994–95), 133 hp (1996–97)	140 hp (1999–2000), 142 hp (2001+)
Headlights	Pop-ups	Fixed
Rear window	Plastic	Glass with defroster
Curb weight	Starts lighter; about 2,300 lb by 1994	About 2,400 lb by 2001
Limited-slip	Viscous (1.6), Torsen (1.8) optional	Torsen optional
Six-speed	No	Available on some trims, then optional from 2001

No 1998 Miatas were sold in North America. Mazda went straight from the 1997 NA to the 1999 NB.

The NA: 1990–1997

The NA is the one that started it all. It’s simple, light and charming, and those pop-up headlights still make people smile at gas stations.

1.6 vs 1.8: The early 1.6-liter cars (1990–1993) make 116 hp and love to rev. Some people prefer them for that character. The 1.8-liter (1994–1997) is the performance pick, with more power and torque and more shared parts with later cars. The 1994 update also brought bigger brakes, extra chassis bracing and a Torsen limited-slip differential option. 1996–1997 cars got a small bump to 133 hp.

The R package: On 1994-and-later 1.8 cars, the R package added Bilstein shocks, a Torsen LSD and sportier suspension. It’s a great find, but assume the original shocks are worn out by now.

What to watch for on an NA:

• Short-nose crankshaft (early 1990–1991 cars): The first production run had a weaker crank nose. It’s manageable if the crank bolt stays properly torqued, but ask about timing belt service history.
• Rust in the sills/rocker panels. This is the big one.
• Brittle radiator end tanks. The plastic gets old. A greenish crust means replace it.
• Oil leaks and a stumble around 3,000 rpm.
• Beat-up modified cars. A lot of NAs went through a stance or drift phase and came out rough.

The NB: 1999–2005

The NB looks more modern and drives a bit more grown-up, without losing what makes a Miata a Miata.

What changed from the NA:

• Stiffer chassis and better aerodynamics
• 140 hp from the 1.8 (142 hp from 2001)
• Glass rear window with a defroster and a bigger trunk
• Six-speed manual on some trims, then as an option from 2001
• 2001 refresh (often called the NB2): more power, more chassis stiffness, bigger brakes on cars with the suspension package, and an interior update

Special mention: the Mazdaspeed MX-5 (2004–2005). A factory-turbocharged NB with a six-speed and a stronger chassis setup. It’s the fastest NB from the factory and is priced like a collector car now.

What to watch for on an NB:

• Front frame rail rust. NBs are known for rust in the front frame rails behind the front wheels, on top of the usual rocker panel rust. Get the car on a lift.
• Sills/rocker panels, same as the NA.
• Cooling system and oil leaks, which are normal old-car stuff on a 20-plus-year-old car.

How they drive

Honestly? Both are fantastic, and most people couldn’t tell you which one they drove blindfolded. The usual verdict:

• NA: a bit lighter, a bit more raw, and the steering feels slightly more alive.
• NB: a bit more power, a stiffer body, more confidence at speed, and a little more room inside.

On a back road, a set of good tires and fresh shocks will make a much bigger difference than NA vs NB.

What they cost in 2026

Miata prices have gone up. The days of clean $5,000 NAs are mostly gone. Based on recent sales and pricing guides:

Condition	NA	NB
Rough but running	around $6,000	around $6,000–$8,000
Solid, clean driver	roughly $8,000–$12,000	roughly $8,000–$11,000
Low-mileage original or special edition	$15,000–$20,000+	$15,000–$18,000+

A few things push prices up:

• NAs often carry a “pop-up tax” over comparable NBs.
• Special editions (M-Edition, 10th Anniversary, Mazdaspeed) bring more.
• Low mileage and originality are the biggest value drivers.

Treat these as a starting point. Prices vary a lot by region and condition, so compare against local listings and recent auction results.

Parts interchange: the secret weapon

One of the best things about NA and NB Miatas is how much they share. The suspension pickup points are the same, so many coilovers, sway bars and suspension parts fit both. A lot of 1.8 engine parts interchange too. That means huge parts availability and lots of used parts for sale from people upgrading theirs.

Always confirm fitment for your exact year before you buy, especially for brakes, wheels and anything tied to the 2001 refresh.

So which one should you buy?

Get the NA if:

• Pop-ups are non-negotiable (no judgment, we get it)
• You want the lightest, most raw Miata
• You like the classic look and character

Get the NB if:

• You want a bit more power and a stiffer chassis
• You live somewhere cold (no frozen pop-up motors, and a glass window with a defroster)
• You want a six-speed or a Mazdaspeed

Either way: bring a flashlight, check for rust first, and buy the cleanest, most original car you can afford. Then check out our Miata mods guide for where to start.