Background
The Iso Rivolta Fidia might just be the greatest luxury supercar saloon you’ve never heard of; powered by a Ford Mustang Boss engine, only 192 were ever made, which helps explain how it has managed to fly beneath the radar for so many years.
Renzo Rivolta had made his fortune as Italy progressed after the war, first with Isothermo fridges, then the Isetta bubble car, and then finally the Iso grand touring car.
In production between 1967 and 1974, it was based on the Rivolta’s chassis; as with so many niche car manufacturers, Iso was forced to be innovative and managed to adapt the chassis as necessary depending on the model it was destined for. In this way it managed to produce three different models with the same underpinnings but fitted with very different bodies: the Grifo, the Lele, and the Fidia you see here.
But don’t think penny pinching was the motivation because it wasn’t; the Iso Rivolta Fidia was a serious project, with significant investment. Designed to be priced just below that of a contemporary Maserati or Ferrari, it had to be useable and reliable at a time when its (relatively) mass-produced rivals were distinctly artisan and in need of constant fettling, largely thanks to capricious ignition and carburetion.
So, using an American engine was a sensible solution and one that gave easy serviceability and better-than-average reliability. Sensible running costs, by supercar standards anyway, were another very welcome bonus.
Renzo knew his market, and invested heavily. This means you won’t find a live rear axle and cart springs at the back, a la Jensen or a Maserati. Oh no, what you’ll find is a sophisticated independent semi-De Dion rear axle in the idiom of Aston Martin, an expensive solution but one that gives far superior handling and roadholding compared to most of its contemporaries.
Of the 192 Fidias made, most would agree there are five major iterations, some of which are considerably more desirable than others…
The first 43 cars were assembled by Ghia, the same people who designed the body. These cars were actually badged ‘Iso S4’, named after the number of seats they provide. The quality was so appalling that Iso withdrew the car from sale, re-introducing it six months later as a factory assembled model.
These factory built cars, the so-called second generation, were spoiled by a less than appealing dashboard. Comprising a flat, vinyl covered rectangle with a few dials scattered across it, it was the sort of thing that would have been fine if you were buying a cheap British kit car to build at home but nowhere near good enough when you are splashing a huge sum on an expensive Italian supercar…
The third generation, now christened the Fidia, arrived in 1969. Still assembled by the Iso works, it retained the Chevy engine and while the dashboard was still flat it was at least now wooden. The next 67 cars were built to this specification, a spec that now started to hint at the Fidia’s promise; there was a great car under there somewhere, it just needed a bit more tweaking to reveal it.
Which happened in 1971 with the unveiling of a completely revised interior that featured new seats and one of the most spectacular dashboards you’re ever likely to see. The next 37 cars were built to this specification: The Iso Rivolta Fidia was edging ever closer to genuine supercar status.
Iso stopped using the Chevrolet engine in 1972, switching to the Ford 351C instead. A pragmatic move driven by the fact that Ford was offering a much more attractive credit line, an important consideration for a company that was still small and still struggling. The next 20 or so cars were built to this specification.
Circa mid-1973 saw Iso fall prey to ever more stringent safety legislation, which meant the loss of the beautiful wooden steering wheel, substituted for a plain black leather one and the plastic steering column and column stalks from the Fiat 130 coupe. The last 22 or so cars were finished to this specification.







