![1974 AMC Gremlin](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/Screen-shot-2015-08-14-at-2.26.08-PM.png)
It took a little kerfuffle with OPEC, but the American buying public finally added fuel economy to its collective list of new-car purchase considerations. Though carmakers had always put some effort into touting the fuel efficiency of the vehicles it produced, it took the 1973-74 oil embargo gas-price spike—and gas lines—to really kick the marketing of mileage into high gear. The subsequent 1979 oil embargo only served to cement the movement.
![Single-Cylinder Cadillac Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/Single-Cylinder-Cadillac-Ad.png)
Collected here are 10 classic ads all built around the message of fuel economy. Though most of these ads are for what we once described as economy cars, some are not, which makes them even more interesting.
Those paying attention at the time will no doubt recall how General Motors ads for its diesel-powered products always included EPA fuel-economy estimates, as well as vehicle’s potential range, assuming a full tank of fuel. The Oldsmobile ad below includes such projections.
Tell us, which of the advertised fuel-economy estimates below feels the least credible?
![51 Ford Truck Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/51-Ford-776x1024.png)
![1974 AMC Gremlin Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1974.png)
![1975 Ford Pinto MPG Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1975-761x1024.png)
![1976 Chevrolet Chevette Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1976-746x1024.png)
![1977 Toyota Corolla Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1977-783x1024.png)
![1978 Honda Civic Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1978-Civic-.png)
![1978 Plymouth Volare Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1978.jpg)
![1981 Dodge Aries Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1981-1024x709.png)
![1981 Datsun 210 Ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1981.1.png)
![1985 Oldsmobile Diesel ad](https://blog.consumerguide.com/wp-content/uploads/sites/2/2015/08/1985.png)
Classic Car Ads: Sexy Ladies Edition