Wagoneer popular among its many repeat buyers through the 1960s, 70s, and 80s. By 1991, it was the longest-running domestically produced vehicle (29 years) on the same platform. As a result of the 1990 oil price shock, gasoline prices in the United States rose 11 percent in less than a year. Sales of the gas-guzzling Grand Wagoneer plummeted from over 10,000 units in 1989 to 6,449 in 1990. Slow sales continued during the Gulf War and only 1,560 Grand Wagoneers were produced in the 1991 model year. In addition to its poor fuel economy, the antiquated SJ platform would have required extensive re-engineering to comply with new Federal Motor Vehicle Safety Standards that would apply to all light trucks and sport utility vehicles sold in the United States by the mid-1990s. As a result, on 27 February 1991, Chrysler announced that it was ending production of the Grand Wagoneer, leaving the Jeep line without a full-size SUV. Buyers of 1991 Grand Wagoneers sold after that date had the option of having a gold "Final Edition Jeep Grand Wagoneer" badge on the dashboard. The last SJ Grand Wagoneer produced rolled out of Chrysler's Toledo Assembly Plant on 21 June 1991. Collectibility Even before Chrysler assembled the final SJ Grand Wagoneer there were specialized companies that were refurbishing and restoring them. Grand Wagoneers that are in top condition seem not to decrease in value. The 1989–1991 models years are considered "the best of the breed and still have a loyal following among a select group". Later model, low mileage, rust-free Grand Wagoneers have become highly collectible with some pristine examples selling for more than their original sticker price over three decades after they rolled off the assembly line. In 2013, the 1963–1991 models were in a list of eight SUVs that have become collectibles and, depending on the condition, desirable items at car auctions. By 2019, the appraisal values of Grand Wagoneers had been increasing an average of 2 to 6 percent with each bi-monthly update for most of past ten years according to Hagerty. By 2021, the 1984–1991 Jeep Grand Wagoneers that "created the blueprint followed by countless others" were among the most sought-after cars during the pandemic according to Hagerty, and in the top nine of a curated list of the best vintage cars on the market. 1993: Grand Wagoneer (ZJ) The Jeep Grand Wagoneer nameplate reappeared for one-year as