Finding some popularity during the final three years of this generation was the Pony model, which was the least-expensive U.S.-built Ford at the time. Pony models used plainer interior trim with greater use of vinyl and plastic instead of cloth, and four-speed manual transaxles were standard, although buyers could opt for the five-speed found in LX models or the three-speed ATX automatic. The list of available options was very limited, to the extent that such luxuries as power steering and factory-installed air conditioning were not offered (a dealer-installed A/C system was available). Given their lighter weight, Pony models were known for their ability to deliver excellent fuel economy, with mileage upwards of in highway driving not uncommon.