Lamborghini Miura P400's V12 Engine Defined the First Supercar

In 1965, at the Turin Motor Show, Lamborghini unveiled a bare chassis with a transverse V12 engine, a radical prototype that would soon become the fastest production car in the world and redefine auto

SD
Sebastian Duval

May 18, 2026 · 3 min read

A classic orange Lamborghini Miura P400 with its V12 engine exposed, parked on a scenic road during a dramatic sunset.

In 1965, at the Turin Motor Show, Lamborghini unveiled a bare chassis with a transverse V12 engine, a radical prototype that would soon become the fastest production car in the world and redefine automotive performance. The audacious debut of the P400 chassis, featuring its groundbreaking mid-engine layout, immediately signaled a new era for high-performance vehicles. The Lamborghini Miura, as it became known, fundamentally challenged prevailing automotive engineering norms.

The Miura began as an experimental chassis displayed without a body, but it quickly evolved into the world's fastest production car, setting an entirely new standard for performance and design. Its unconventional genesis, starting as a mere chassis at the 1965 Turin Motor Show before becoming the world's fastest production car, illustrates that groundbreaking innovation often emerges from radical engineering experiments rather than polished, market-ready products.

The Miura's legacy suggests that pushing engineering boundaries with audacious design can create enduring automotive icons, influencing car development for decades to come. The Miura proved that a radical mid-engine V12 configuration could instantly render previous high-performance vehicles obsolete, unilaterally defining the modern supercar.

The P400: A New Standard of Speed

  • The production version of the Miura P400, released between 1966 and 1968, had a 3.9-litre V12 engine producing 345bhp and a claimed top speed of 172mph, according to Carthrottle.
  • The Miura's V12 engine produced a maximum power output of 350 hp in the P400 version, according to Lamborghini's official site.

These specifications were unprecedented for a road car of its era, firmly establishing the Miura as a new benchmark for speed and power. The slight discrepancy in reported power figures for the foundational P400 model, 345bhp versus 350 hp, potentially stems from different measurement standards or slight variations in early production. Regardless, its performance solidified the Miura's status as the world's fastest standard production car in 1966.

The SV Variant: Pushing Boundaries Further

The Miura P400 SV is equipped with a mid-mounted 3.9-liter V-12 engine that produces 385 hp at 7,850 rpm, according to Robb Report. This variant, built between 1971 and 1973, saw 150 examples produced. The SV variant demonstrated Lamborghini's continuous commitment to refining the Miura's groundbreaking design, culminating in its most powerful and exclusive form.

Lamborghini's rapid escalation of the Miura's V12 power from 345hp to 385hp in just a few years didn't merely set new speed records. It established a relentless, almost aggressive, pursuit of performance that became the defining characteristic of the supercar genre. The continuous elevation of the benchmark solidified the supercar niche by setting an aspirational design and performance paradigm.

Beyond Production: Miura's Broader Influence

A one-off Miura Roadster was displayed at the 1968 Brussels Motor Show and later used as a demonstration vehicle for lead and zinc applications in car manufacturing, according to Carthrottle. The unique variant underscores the Miura's role not just as a performance icon, but also as a platform for exploring future automotive technologies and materials. Such experimental applications highlighted the Miura's design versatility beyond its high-performance role.

The Enduring Legacy of the First Supercar

The Miura's bold engineering and iconic status continue to inspire automotive designers and collectors, shaping the trajectory of high-performance vehicles for generations. Its revolutionary mid-engine V12 configuration remains a foundational element in supercar design decades later. Lamborghini's initial risk with an unbodied chassis ultimately yielded an enduring symbol of automotive aspiration.

The Miura's impact on the luxury market remains significant, influencing contemporary design aesthetics and performance benchmarks for vehicles. Entering production by 2026. The foundational supercar continues to define the pinnacle of automotive engineering and prestige for collectors worldwide.

Frequently Asked Questions About the Miura

How many Lamborghini Miuras were made in total?

Lamborghini produced approximately 765 Miura models across its variants. This total includes 475 examples of the original P400, 140 units of the P400S, and 150 units of the P400 SV, according to Carthrottle.

What distinguished the Lamborghini Miura P400S from the original P400?

The Miura P400S, introduced in 1968, offered an enhanced power output of 370bhp, an increase over the initial P400 model. Additionally, this variant featured minor interior upgrades, providing a refined experience while maintaining its groundbreaking performance, according to Carthrottle.