Along with anything by Toyota or Honda, Mazdas were on a short list of vehicles I believed worthy of our test-drive time when my wife and I were shopping to replace her 2004 Mitsubishi Eclipse GTS Spyder recently. Notably, their CX-3, CX-30 and CX-5 crossovers and, car lover that I am, the Mazda3. While we ultimately ended up with a lovely 2021 Lexus NX300, I was impressed with the Mazdas. Their build quality seemed extraordinary, and they seemed downright luxurious, which was remarkable given their price points. Through each of our Mazda test drives, I couldn't help but be reminded of the little Mazda RX-2 coupe the family that shared our last name and lived across the street from us had in the late 1970s.
If you're not familiar with the RX-2, you're not alone. Mazda only sold the sub-compact car in the United States in two- and four-door versions from 1971 through 1974. This RX-2 I used for illustrative purpose is a 1972.
Contemporary road tests of the RX-2 were glowing. Testers admired its space-efficient, ergonomically well-designed interior as well as its more-than-competent road manners. In a day and age when Ford was selling Pintos and Chevrolet was pushing out Vegas, the RX-2 was a watershed. Where they dinged the RX-2 was on its fuel economy, but did that really matter when gas was 25- to 30-cents a gallon?
I thought it odd at the time that they replaced their tank-like 1952 Pontiac Chieftain with the lilliputian RX-2. What's more, their RX-2 it was yellow, making it look even smaller, whereas their big old Pontiac was an austere black, just like this one. Mike and Sally were considerably older than my fossilized parents, and I thought the Chieftain fit them perfectly. Those two sweet natured oldsters looked totally out of place in something not only so small, but so contemporary.
However, back then, with the wounds of the 1973–74 OPEC oil embargo still fresh, plenty of people were swapping their big, heavy gas guzzlers for something more economical. Many found themselves in well-built, supposedly gas-sipping Japanese cars, just as Mike and Sally did.
While certainly better on gas than their Pontiac Chieftain's straight-eight likely managed, the RX-2's rotary—or "Wankel"—engine was compact, lightweight and turbine-smooth, but also surprisingly thirsty. The U.S.-market RX-2 used Mazda's 1.2-liter, two-rotor 12A engine, its prodigious performance coming with a fuel-economy penalty that became increasingly difficult to ignore as gasoline prices rose.
Although Mazda entered into a technical cooperation agreement with NSU/Wankel in 1961, it didn't actually begin selling a rotary-powered production car until 1967, when the Cosmo Sport (above) was introduced.
The company subsequently brought the rotary-powered R100 to the United States in 1970, followed by the RX-2 in 1971.
When I was a kid, Wankels were all the rage and seemed destined to replace conventional piston engines. They were compact and lightweight and, because of the way rotary-engine displacement is measured, offered impressive power for their nominal displacement. My older brother, who wasn't a car guy but knew I was, gave me one of these Wankel rotary engines model kits for Christmas in what had to be 1973 or 1974.
General Motors was so enamored of the concept that it planned to use its own Wankel in several small cars, initially targeting the Chevrolet Vega and later the new-for-1975 Chevrolet Monza. American Motors, in fact, designed its Pacer around the compact dimensions of a rotary engine and initially intended to source the engine from GM.
Everything was fine at GM—until it wasn't. Engineers struggled to make the Wankel meet increasingly stringent U.S. emissions requirements while also delivering acceptable fuel economy and durability. By 1974, GM had canceled its rotary program. That left AMC, which had gone a long way down the development pipeline with the Pacer, in a bit of a pickle. AMC ultimately had to redesign the Pacer's drivetrain and engine compartment to accommodate its conventional straight-six engines.
In addition to emissions and fuel-economy challenges, Wankel engines became notorious for problems involving their apex seals—the seals at the tips of the rotors that help maintain compression against the inside surface of the rotor housing. Wear or damage to those seals could result in loss of compression, reduced performance and difficult starting.
Back to my old stomping grounds and Mike and Sally and their funky-sounding, Wankel-powered RX-2: they didn't keep it long. While they bought their Chieftain new in 1952 and had it for more than a quarter-century, they only had the RX-2 for a year or so. Mike loved its handling and, in his words, its "snazzy" interior, but was wholly unimpressed with its fuel economy. Bad fuel economy was the Wankel's dirty little secret, as it were.
Seeking fuel-economy nirvana, poor old Mike replaced the RX-2 with a two-door 1979 Oldsmobile Cutlass powered by a diesel engine.