【解説】NBロードスター／[Definitive Commentary]The NB MX-5 Miata(mk2)

Mechanically, the NB MX-5 Miata shares the legendary assets of the N-platform—widely celebrated as a modern masterpiece of open-top architecture—inheriting the flawless double-wishbone suspension and the classic front-engine, rear-wheel-drive (FR) layout from its NA predecessor. This mechanical continuity is a powerful testament to the Mazda engineers’ profound understanding of the “true essence” of a lightweight sports car, an ideal that was obsessively pursued in the first generation.

However, the core identity of the NB is far from a mere rehash. Its ultimate mission was to elevate the purity of the “joy” established by the NA to an entirely new, intoxicating dimension. This burning passion is perfectly encapsulated in the simple yet profound words of its development concept: “Lots of Fun.”

Throughout the 1990s and into the 2000s, countless Japanese sports cars armed themselves with turbochargers, locked in a fierce, cutthroat horsepower arms race under the 280-hp gentleman’s agreement. Yet, in the midst of this era, the NB MX-5 Miata stubbornly championed the “raw virtues” of a naturally aspirated engine and a featherlight body. It continued down a brilliantly unique path, completely liberated from the industry’s obsession with sheer speed.

What Mazda relentlessly refined was an unwavering philosophy: the true soul of the MX-5 Miata lies in the visceral joy that will never appear on a spec sheet—its Kansei (sensory) performance. It is the pure delight of a chassis reacting linearly to the driver’s every command, the exhilarating liberation of carving through canyon roads while feeling the wind and light, and the deep camaraderie shared with enthusiasts who embrace this exact worldview.

The farewell to the pop-up headlights—the absolute, defining symbol of the NA—is perhaps the most dramatic representation of this philosophy. Although necessitated by international pedestrian safety standards, letting go of such an iconic, beloved feature sparked fierce debate and polarized the fan base.

Yet, Mazda’s decision was never driven by sentimentality. Instead, it yielded a significantly lighter nose and vastly sharper aerodynamics. Furthermore, development budgets were relentlessly poured into maturing the unseen realms of driving dynamics and daily drivability. This included dramatically enhancing body rigidity through strategic gusset reinforcements, and achieving a lower center of gravity—alongside a more practical trunk—by relocating the spare tire deep into the floor pan.

Every single one of these engineering decisions was a highly rational choice aimed at elevating the tactile quality and driving feel of the machine. It stands as a powerful, undeniable declaration that the NB MX-5 Miata was never just an exercise in nostalgia, but rather a sincere, uncompromising evolution intended to forge the ultimate modern lightweight sports car.

The NB MX-5 Miata is a rolling canvas, brought to life through an astonishing array of color variations. In the Japanese domestic market alone, an incredible 28 distinct hues (*1) have been cataloged. Expand that gaze to the global stage, and the palette swells to a staggering 32 colors. From vibrantly flamboyant shades to sleek, undeniably cool tones, the MX-5 Miata exists in a kaleidoscope of personalities designed to steal the spotlight.

Standing out among this vibrant lineup as the true signature—a dazzling body color forged exclusively to define the NB MX-5 Miata—is the blazing and unforgettable Evolution Orange Mica (18K) (*2).

Enthusiast Notes on the Paint Ledger:
1:The legendary Classic Red and Brilliant Black received specific color code updates from the NB2 iteration onward, marking a subtle but important distinction for purists.
2:While the ultra-exclusive, overseas-only “Jasper Conran” edition featured a bespoke Conran Silver Metallic (JC1), it is classified as a custom paint application and is therefore excluded from this definitive factory count.

The early-model NB MX-5 Miata, affectionately known as the “NB1,” intensely reflects the “Fun, Friendly, and Simple” DNA of its NA predecessor. While retaining the beloved silhouette of the original, it introduced exquisitely soft, sweeping curves, a remarkably endearing “happy smile” front fascia, and a heart-pounding lineup of body colors. Despite the painful farewell to the pop-up headlights, these familiar, joyful elements instantly washed a wave of pure relief over enthusiasts, confirming without a doubt: This is the rightful heir to the MX-5 Miata throne.

Beneath that smiling exterior, however, a dramatic mechanical revolution had taken place. Thanks to a monumental leap in body rigidity, the somewhat pastoral, fluttering lightness of the NA was meticulously refined into a profoundly solid, yet infinitely “supple athleticism.”
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The Beating Heart of Jinba Ittai

The powertrain carried the legendary B-series engine inherited from the NA, offered in two intoxicating flavors to ensure every driver could achieve the ultimate Jinba Ittai (horse and rider as one) perfectly tailored to their style:

1.8L BP-ZE (145 hp):A torque-rich, aggressively tuned powerplant mated to a crisp 6-speed manual transmission for authoritative carving.
1.6L B6-ZE (125 hp):Paired with a 5-speed manual, this setup delivered the absolute, visceral thrill of wringing out every last drop of power straight to the redline.
4-Speed Automatic:Also available for those seeking the open-air experience with effortless cruising capabilities.
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A Cultural Milestone in Drivability

In the Japanese domestic market, a major headline was the standardization of airbags and air conditioning across the board (*). This unquestionable link between safety, modern comfort, and daily usability cemented a profound cultural achievement for this generation. It powerfully proved that the ultimate value of the MX-5 Miata lies not in chasing cold, clinical lap times on a circuit, but in the pure romance and accessibility of the everyday drive.

The heroic theme colors of the NB1 era were the blindingly vibrant Evolution Orange Mica and the deeply sophisticated Grace Green Mica. Alongside the standard catalog lineup and a dazzling array of limited-edition models boasting exclusive paints, these colors spoke directly to the soul of the enthusiast. They championed another, equally vital value of the sports car experience: the profound “joy of ownership” and the sheer, unadulterated “pleasure of admiration.”

Enthusiast Note on Options (*)
While comfort was standardized, purists weren’t entirely forgotten—an air conditioning-delete option was uniquely available for the stripped-down “Standard (Base Grade)” model for those seeking maximum weight savings.

Shattering the very concept of a standard “minor change,” the heavily revised NB2 stands as an absolute pinnacle of the NA/NB era. The undisputed masterpiece of this evolution was the introduction of the BP-VE 1.8L engine, now armed with Mazda’s S-VT (Sequential Valve Timing) technology. Pushing maximum output to a thrilling 160 hp, the torque swelled linearly with every millimeter of throttle travel. The way it roared to the redline, accompanied by a deeply sensual exhaust note, instantly evoked the legendary, drool-worthy tuned engine of the prior generation’s ultra-exclusive “M2 1028.”

Grassroots Racing and the “NR-A”

While the 1.6L engine retained its pure, high-revving specs, it served as the beating heart for something truly monumental: the introduction of the “NR-A”—a JAF-certified motorsport base vehicle. This stripped-down, track-focused grade ignited the legendary “MX-5 Miata Party Race” series. It fostered a fiercely passionate, grassroots racing culture where drivers could battle it out on the weekend in their street-legal, license-plated cars—a vibrant motorsport spirit that pulses fiercely through the veins of the current ND generation today.
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A Fierce Visage and a Purposeful Cockpit

The aesthetic transformation was just as dramatic.

Exterior:The NB2 donned a much more aggressive, razor-sharp face, featuring piercing projector headlights and Mazda’s signature “Contrast in Harmony” five-point corporate grille.
Interior:Inside the cockpit, the driver was greeted by striking white-faced gauges and newly redesigned bucket seats with vastly improved lateral support, ensuring the cabin held you tight during high-G cornering.

Every single one of these meticulous upgrades was united under a crystal-clear, uncompromising theme: the elevation of “Dynamic Quality”—a direct, visceral appeal to the driver’s sight and touch.

The absolute masterstroke of this era’s design was the introduction of the breathtaking Crystal Blue Metallic. This brilliantly vibrant theme color, a hue completely unprecedented in the sports car world at the time, was so masterfully executed that it captured the prestigious Grand Prix at that year’s Auto Color Awards.
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An Unforgettable Television Romance

During this period, Mazda was on the verge of a massive brand revolution, and deeply emotional television commercials for their existing fleet were dominating the airwaves. Set to a soul-stirring, rhythmic arrangement of the classic hit “Stand by Me,” the mesmerizing sight of a brilliant blue MX-5 Miata dancing gracefully through a maze of soaring water fountains captured the imagination of the public. For countless enthusiasts, watching that scene was the exact moment their hearts skipped a beat, falling hopelessly and forever in love with the ultimate lightweight sports car.

While the NB3 might appear visually identical to its predecessor, crucial modifications were made to the 1.8L engine’s exhaust system to combat increasingly stringent international environmental regulations. Though the numbers on the spec sheet remained unchanged, the tactile feel of the engine underwent a subtle, nuanced shift. However, the truly monumental feat of the NB3 isn’t found in its mechanics—it is the sheer, defiant fact that the MX-5 Miata survived.
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The Extinction of Giants

Behind the scenes, a massive tidal wave was sweeping through the automotive world. Unable to scale the insurmountable walls of these new emissions standards, an entire generation of legendary flagship sports cars was ruthlessly forced into extinction. The Toyota Supra (A80), the Nissan Skyline GT-R (R34), the Nissan Silvia (S15), and even Mazda’s own rotary-powered hero, the RX-7 (FD)—titans that defined an era—were all systematically laid to rest. In this dark age for performance, the MX-5 Miata stood as a beacon of hope.
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Rare Hues and Groundbreaking Customization

Against this dramatic backdrop, the NB3 introduced two distinctly expressive theme colors: the intensely sporty Splash Green Mica and the sophisticated, deeply elegant Garnet Red Mica. While these didn’t dominate the sales charts at the time, their scarcity has transformed them into incredibly rare, highly coveted jewels for modern collectors.

Furthermore, the groundbreaking “Web Tuned @ MX-5 Miata” program—initially tested during the NB2 era—exploded into full-scale operation. This revolutionary system was a massive leap forward, pioneering on-demand automotive manufacturing. It empowered enthusiasts to jump onto the internet and, guided purely by their own sensory desires, meticulously hand-pick their interior, exterior, and mechanical configurations. It allowed them to order a literal one-of-a-kind, brand-new MX-5 Miata straight from the factory. Astonishingly, the base NB6 model for this customization started at an incredibly affordable 1,640,000 yen (excluding tax, but including A/C)—making it even more accessible than the original NA!
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Conquering the Global Stage

Perhaps the most glorious chapter of the NB3’s legacy was its absolute triumph on the international stage. In the prestigious UK-based AUTOCAR magazine’s fiercely competitive “Best Handling Car 2003” shootout, the European-spec MX-5 Miata charged into the finals to stand toe-to-toe against giants like the Porsche 911 GT3 (996). Defying all odds, the lightweight hero captured the ultimate crown, rightfully heralded by the judges as a masterful machine “where every aspect of daily life becomes a pure joy, no matter the stage.”

Gracing the final chapter of its glorious production life, the NB4 is the absolute culmination of an evolutionary journey—a perfection of the legendary platform that spanned eight years of the NB, or rather, a staggering 15 years dating back to the genesis of the NA. While its core mechanical architecture remained largely unchanged, every single millimeter of this machine was meticulously matured. From the sleek aluminum-look accents adorning the center console to the bulletproof reliability of its refined powertrain and flawlessly dialed-in suspension settings, the NB4 radiates a breathtaking level of completeness and polish.

The NB4 donned the ultra-cool Titanium Gray Metallic II as its theme color, a sleek hue that perfectly aligned its visual identity with the rest of Mazda’s fierce sports car stable of that era. The promotional footage from this time—featuring the car carving through a torrential downpour with the top proudly down—captured an undeniably handsome, raw, and purist sports car ethos. Then, in the twilight of this generation, Mazda unleashed two fiercely ambitious, pulse-pounding derivative models: the Roadster Coupe (NB7) and the Roadster Turbo.
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The Realization of a Fixed-Roof Dream

The tantalizing prospect of a fixed-roof MX-5 Miata had teased enthusiasts through breathtaking concept cars since the NA days. Finally bringing that mesmerizing, sweeping roofline to reality, the MX-5 Miata Coupe was Mazda’s definitive answer to fans craving the striking aesthetic elegance of a closed-body coupe, coupled with the relentlessly pure, razor-sharp driving dynamics born from a massively stiffened chassis.

Factory-Tuned Ferocity

On the other end of the spectrum was the ferocious “Turbo.” This was a highly unusual, audacious move by the factory to venture into the realm of forced-induction tuning, a domain traditionally monopolized by the aftermarket. Yet, rather than delivering a lag-heavy, unpredictable boost spike, Mazda’s engineers masterfully tuned the turbocharger to deliver a surging, beautifully linear wave of torque from the lowest RPMs all the way to the top. It was a brilliantly executed powerband that remained flawlessly true to the highly responsive, driver-centric MX-5 Miata philosophy.
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These final-hour masterpieces, where Mazda looked their most passionate fans in the eye and delivered their wildest dreams, stood as the ultimate, undeniable proof of the boundless potential hidden within the legendary MX-5 Miata platform.

As the countdown to the end of the NB MX-5 Miata’s production run loomed in the shadows, a chilling fear rippled through the enthusiast community: “Is this the end of the MX-5 Miata?”

The automotive landscape was shifting aggressively. Crushing international safety and environmental regulations were forcing everyday cars to become increasingly bloated and heavy. In such an era, the survival of a pure, uncompromising lightweight sports car seemed like an absolute impossibility. Yet, Mazda stood defiant, presenting a crystal-clear and unyielding vision: “The soul of the MX-5 Miata remains unshaken, even if its form must evolve.”
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The NC Generation (2005): A Courageous Evolution

Unveiled in 2005, the third-generation NC MX-5 Miata introduced an entirely new platform and an expanded footprint (while heavily criticized as “large” at the time, viewing it through a modern lens reveals it remained an undeniably compact machine). This physical growth was the sincere, unavoidable result of embracing the heavy responsibilities and stringent global regulations demanded of a modern vehicle.

But Mazda’s ultimate ambition was far greater: to elevate the sheer sensation of Jinba Ittai to a higher, more sophisticated dimension, and to deliver it to a broader audience than ever before. Armed with a muscular, enlarged 2.0L engine, a highly capable chassis that offered newfound composure, and the brilliant introduction of a Power Retractable Hard Top (PRHT) alongside the traditional soft top, the NC was a true tour de force.

Yet, the most mind-blowing achievement of the NC was Mazda’s absolute “obsession with weight reduction”—despite all these monumental evolutionary leaps, they miraculously kept the curb weight virtually identical to the late-model NB!
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The ND Generation (2015): The Masterpiece of Purity

Then, in 2015, the current fourth-generation ND model sent absolute shockwaves across the globe. Championing a bold “Return to Origins,” it shrunk its overall length to rival the original NA and executed a ruthless, uncompromising weight-saving campaign that pushed the lightest grade back under the mythical one-ton mark!

This was a visceral manifestation of the Mazda engineers’ burning tenacity—a triumphant effort to distill the cherished Jinba Ittai philosophy, fiercely protected and nurtured by every preceding generation, into its absolute purest form using cutting-edge technology. Drawing a hard line against the industry’s obsession with horsepower supremacy, the ND boldly positioned a brilliant, high-revving 1.5L engine as its beating heart. The razor-sharp agility born from its extreme lightness anchored the car’s entire worldview on the intoxicating thrill of absolute driver control.

Just as the NB had bravely parted ways with pop-up headlights to push the envelope, the ND possessed the sheer courage to shatter modern automotive conventions to protect the sacred essence of the machine.
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The Eternal Flame

The sheet metal may shift and the spec sheets may transform through the ages, but the universal truth remains untouched: the moment you grip the steering wheel, an uncontrollable, ear-to-ear grin is absolutely guaranteed. The primal, soul-stirring “joy” that defines the MX-5 Miata undeniably lives on, roaring passionately into the future.

Born in the twilight of the 1990s—a turbulent era of radical transformation for sports cars—the NB MX-5 Miata entered the world under the massive, looming shadow of the legendary original NA. Yet, when you deeply unravel its history, you instantly realize that its profound role and fiercely unique character cannot be lazily dismissed as a mere “model change.”

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The Razor’s Edge of Two Centuries

The NB stood valiantly on the exact frontier: perfectly balancing the raw, analog romance of 1980s lightweight sports cars with the sophisticated dynamic quality and vital safety standards demanded by the dawn of the 21st century. It intensely preserved the primitive, mechanical heartbeat of the NA, but elevated it to an entirely new realm. The true essence of the NB lies in this exquisite equilibrium—an obsessively honed setup, meticulously polished by master craftsmen striving for absolute driving perfection.

It stands as the definitive **bridge**, capturing a highly sophisticated “driving flavor” that still resonates profoundly with enthusiasts today.

An Irreproducible Masterpiece of Sensory Connection

Looking back from our modern world—a landscape dominated by accelerating digitalization and electrification—the NB is a revelation. It deepened the sacred philosophy of ***Jinba Ittai*** (horse and rider as one) not through a cold reliance on electronic nannies, but through the pure, uncompromising maturation of its mechanical soul. Its unadulterated driving feel has become an incredibly rare, virtually irreproducible experience in the modern age.

This isn’t just blind nostalgia. It is the absolute, perfected form of an era where a machine and its driver could still fiercely converse through all five senses.

The Unfading Proof of “Lots of Fun”

Deliberately distancing itself from the deafening, senseless noise of the era’s horsepower wars, the NB walked a path of utterly sincere evolution, single-mindedly sharpening its *Kansei* (sensory) performance.

The NB MX-5 Miata was never just a transit point connecting the NA to the NC. It is a brilliant, one-of-a-kind masterpiece born at the exact, magical intersection of Mazda’s unshakable engineering conviction and the shifting zeitgeist of the times. It stands as living, roaring proof that its core development concept—”Lots of Fun”—possesses an eternal, universal value that will never fade.