[3][4] The Espada is a four-seater GT and was initially sold alongside the Islero and the rear mid-engine Miura.

1,217 Espadas were made,[5] making it the most numerous and longest-running Lamborghini model until the expansion of Countach production in the mid-1980s.

[5] The Espada was equipped with a 3,929 cc (240 cu in) Lamborghini V12 engine derived from that used in the 400 GT 2+2, rated at 325 hp (242 kW; 330 PS) in the series I cars.

[5][6] The design of the series I dashboard was inspired by the Marzal concept car, and featured octagonal housings for the main instruments, topped by an additional binnacle for the secondary gauges.

[4] Power output increased to 350 hp (261 kW; 355 PS)[3] due to a higher 10.7:1 compression ratio.

[4] As on the series I, 205VR15 Pirelli Cinturato CN72 tyres were fitted, suiting the cars handling until power steering was offered as an option.

US emissions requirements also led to the factory adding a secondary air injection pump and special tuning of carburetors and the ignition system.

Some people consider these later US-spec cars as a separate fourth series, but Lamborghini did not officially change the model designation.

Bare chassis were shipped from Marchesi to Bertone, where bodywork, paint and trim were added prior to final assembly at the Lamborghini factory.

It was fully independent, with unequal length double wishbones, coil springs, hydraulic shock absorbers and anti-roll bars.

The wooden body buck made for the Jaguar Pirana concept car was used in the construction of this prototype.

It had the very low nose and gullwing doors of the Marzal, but a front end treatment much closer to the production Espada.

An unusual configuration of multiple large side windows was designed, possibly to improve rear 3/4 vision.

This car was shown at the 1968 Turin Auto Show, but remained a one-off experiment and did not enter production.

This system was possibly developed in order to compete with the Ferrari 365 GT 2+2, which was also equipped with self-leveling rear suspension.

According to Lamborghini test driver Bob Wallace, the Lancomatic suspension was promising but very costly and had significant technical issues, including seal failure due to heat and friction and harsh ride quality.

[4] The Lamborghini Faena is a one-off 4-door saloon based on a Series II Espada and built by coachbuilder Pietro Frua.

After being exhibited at the 1980 Geneva Motor Show, the Faena was sold by Lamborghini dealer Lambo-Motor AG in Basel.

[11] In 1999, a new version of the Espada was rumored to be in the works, but it was right at the time Lamborghini wanted to concentrate on a Diablo successor, so little became of the idea aside from a few drawings.

[14] Lamborghini presented the 4-seat Estoque concept car at the 2008 Paris Motor Show, however no production model has been forthcoming.