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Junkyard Gem: 1982 Buick Riviera Diesel Coupe

After appending the Riviera name to various cars during the 1950s, Buick finally made the Riviera a model in its own right for the 1963 model year. Seven more generations of Buick's rakish personal luxury coupe followed over the next 36 years, but only one ever had an oil-burning engine available from the factory. Today's Junkyard Gem is one of those cars, a vividly purple '82 Riviera with 105 horses of Oldsmobile diesel power under its hood, found in a Denver-area self-service boneyard recently. Starting in the 1966 model year, the Riviera had been living on the same platform as the Cadillac Eldorado and Oldsmobile Toronado, both of which featured radical front-wheel-drive powertrains that used longitudinal V8s powering the front wheels via sturdy chains. However, despite the common platform, the Riviera alone kept the then-traditional front-engine/rear-drive setup, making it something of a corporate oddball for the next 12 years. Then General Motors decided to downsize the Eldorado/Toronado platform for the 1979 model year, and the Riviera got those cars' front-wheel-drive rig at the same time. Sales of the smaller Rivvy were strong, no doubt due in large part to certain geopolitical events that sent gas prices skyward and caused fuel rationing and gas lines. Back in the late 1970s and early 1980s, diesel fuel was much cheaper than gasoline in the United States. Mercedes-Benz and Peugeot had done reasonably well selling diesel-engined cars here during the 1970s, and so General Motors developed a diesel-burning version of the Oldsmobile 350-cubic-inch (5.7-liter) V8 engine. As was typical of naturally-aspirated automotive diesels of the time (every modern car's diesel engine is turbocharged), horsepower was miserable but torque was strong; the engine in this car was rated at 105 horses and 205 pound-feet. The 5.7 diesel first showed up in the Riviera for the 1981 model year. The base engine was a 4.1-liter version of the Buick V6, while the oil-burning Olds cost an extra $924 (about $3,206 in 2023 dollars). A comfortable and smooth-riding Riviera with the cheap fill-up price and long range of diesel sounded great, even if you had to line up with Freightliners and Peterbilts to get to a pump, but there were problems. Oh, so many problems! Oldsmobile's 350 V8 had been around since 1968 and it had proven to be both reliable and powerful.

2022 Buick Encore starts at $25,795

The Buick Encore entered the market here for the 2013 model year, its combination of solid, practical, and premium-ish content working well enough to increase sales by about 10% every year until 2019. The shine on that first-year model was such that it was recently voted one of the best used-car buys under $10,000. Still in its first generation, the Encore soldiers into the 2022 model year with a few small changes. The biggest update for the 2022 Encore is a newer 1.4-liter four-cylinder engine with more power. The previous unit produced 138 horsepower and 148 pound-feet of torque; the new 1.4 will unleash 155 hp and 177 lb-ft. That engine will only be available on the Preferred trim — which is the only one left. In 2018, the Encore came in six flavors. Whittling reduced that to a base model and a Preferred model for 2021, and for next year the base departs. Also (kind of) under the hood, an electric heater and defroster replace the traditional heater core system, for faster toasties in cold climes.  The only change outside is the addition of an exterior temperature sensor. Inside, the eight-inch infotainment touchscreen shrinks to become a seven-inch touchscreen. The passenger's seatback will no longer fold flat, so Buick took the opportunity to add a seatback map pocket to the shotgun position. Buick will charge $25,795 for the 2022 Encore, that figure including the $1,195 destination charge. It's the same price as the 2021 Encore Preferred.  The continued paring of the lineup suggests GM is ready to wind the model down now that the tiny-bit-larger and more profitable Encore GX is killing the Encore in the sales race. Through the end of September, the Encore is down on its 2020 sales volume in the U.S. by about half, whereas the Encore GX has more than doubled its 2020 sales so far this year. Automotive News reported that the Encore will quit the U.S. market in 2023 without a replacement as the automaker digs into its electric efforts. GM Authority believes there's a chance the new-generation Encore sold in China could come here. 

2020 Buick Encore drops more powerful 1.4-liter four-cylinder option

It's not just Chevrolet Equinox, Terrain and Traverse crossovers and Cadillac CT6 enjoying the engine and trim switcheroos this spring. Based on the order guide, CarsDirect reports that the Buick Encore, Buick's most popular model by far, will lose one of its two engines. The 2019 Encore offers a 1.4-liter four-cylinder in two guises: one with 138 horsepower and 148 pound-feet of torque, the other with 153 hp and 177 lb-ft and stop/start. The more powerful version will not be an option on the 2020 Encore. The upgraded motor is a $250 option, but only after spending an additional $2,600 to move up to the Sport Touring trim, or shelling out $6,100 to reach the Essence trim. Aggressive deals could make the higher trims more economical, though; at the time of writing, the Sport Touring Encore includes $3,250 cash allowance, making it $650 less expensive than the base Encore 1SV. The more powerful 1.4-liter engine also delivered better gas mileage, with buyers getting one more mile per gallon in combined driving. Even so, buyers didn't dig it. In comments to CarsDirect, a Buick spokesperson said those purchasing 2019 Encores have only chosen the burlier motor 12 percent of the time. The weak take-rate could end up doing Buick an easy favor. The Buick Encore GX is expected to make landfall on U.S. shores sometime this year, riding on a different platform than our present Encore, and bringing a longer wheelbase with it. It will slide into the lineup between the $23,200 Encore and $31,995 Envision. This is all hypothetical at the moment, of course, but that seems a perfect place to insert the 153-hp 1.4-liter as an exclusive standard feature.