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GM reportedly developing 2.5-liter turbo four-cylinder

General Motors is allocating a massive amount of resources to developing electric technology, but it's not forgetting about the gasoline-powered cars that make up the bulk of its sales. It's reportedly designing a new 2.5-liter turbocharged four-cylinder engine based on its 2.7. Citing "sources familiar with the matter," enthusiast website GM Authority wrote that the 2.5-liter four is "in [the] final stages of development," meaning it should be announced sooner rather than later (assuming the report is accurate). Technical details are few and far between as of writing. The publication learned that the 2.5 will be part of the Cylinder Set Strategy (CSS) family of engines and that it will be mechanically related to the 2.7-liter currently found in the Chevrolet Silverado 1500, among several other models. It will feature dual overhead camshafts. It's too early to tell which models the 2.5-liter four-cylinder will end up in, or how much power it will generate. The output will likely depend on the application. For context, the 2.7 delivers 310 horsepower at 5,600 rpm and 348 pound-feet of torque between 1,500 and 4,000 rpm in the Silverado. In the smaller Colorado, it provides anywhere between 237 and 310 horsepower depending on the trim level selected. While this is pure speculation, our crystal ball tells us the engine will end up powering crossovers. It's an easy deduction to make. We can't imagine it will be offered in the Silverado, and seeing it in the Colorado is unlikely because its entry-level engine develops 237 horsepower; there's likely not much of a market for a midsize truck with 200 or so horsepower. Putting it in the Corvette wouldn't make sense and the Camaro has nearly reached the end of its life cycle without a successor planned. This leaves us with Chevrolet's range of crossovers, like the Equinox, as well as their GMC-, Buick-, and Cadillac-branded counterparts. We're not discounting the possibility that the cars set to receive the 2.5 haven't been unveiled, but those are likely crossovers, too; the odds of seeing another big Chevy sedan are very, very low. General Motors hasn't commented on the report, and it hasn't publicly announced plans to expand its CSS family of engines. If the report is accurate, we should learn more about the new turbocharged, 2.5-liter four-cylinder engine in the not-too-distant future. Featured Gallery 2022 Chevrolet Equinox RS View 56 Photos Buick Chevrolet GM GMC

GM pauses 3.0-liter turbodiesel production due to a supplier shortage

General Motors confirmed it has temporarily stopped taking orders for trucks and SUVs equipped with the 3.0-liter Duramax turbodiesel six-cylinder engine. It blamed the last-minute pause on a supplier-related shortage. Website TFL Truck first reported the news, and a representative from General Motors quickly confirmed it. The spokesperson explained the issue is due to a "temporary part shortage" and added that production will resume "as soon as possible," meaning the Duramax engine (which is called LM2 internally) is not going away permanently. Additional details are not available, so we don't know if the issue is related to the ongoing chip shortage. Rather than delay deliveries and create a backlog, General Motors is reportedly asking its dealers to encourage buyers who want a turbodiesel engine to instead select either the 5.3-liter V8 or the 6.2-liter V8, depending on the model selected. Both are gasoline-powered units. There's no word yet on when Duramax production will resume. The shortage affects several models, including Chevrolet's Tahoe, Suburban, and Silverado 1500 and GMC's variants of these trucks. Cadillac's Escalade is temporarily diesel-less as well. Heavy Duty variants of the Silverado and the Sierra are not affected because they're powered by a different Duramax engine with eight cylinders. Motorists seeking a full-size SUV powered by an efficient turbodiesel engine are temporarily out of options because the Tahoe/Yukon and the Suburban/Yukon XL had the segment to themselves. The Duramax was surprisingly popular, too: in May 2021, GM Authority reported that the turbodiesel straight-six represented 8% of Suburban sales and 6% of Tahoe sales. Installed in a rear-wheel-drive Tahoe, the engine returns 21 mpg in the city, 28 mpg on the highway, and 24 mpg in a combined cycle, figures that make the body-on-frame behemoth more efficient than the unibody, front-wheel-drive Chevrolet Blazer that's 20 inches shorter and approximately 1,700 pounds lighter. Related video: 2021 Chevrolet Tahoe 3.0L Duramax engine

More than half of Mazdas sold in 2018 are CX-5s, and other interesting sales facts

Last year was a seriously good year for carmakers. Overall, more vehicles were sold than in 2017, and the total number wasn't far off of the all-time record in 2016. Digging deeper into the numbers, you'll find some pretty usual stuff including the Ford F-Series still being the bestselling pickup truck in America, and a continued trend toward crossovers. But there are also some oddball factoids tucked in these sales reports, some that defy the trends, and some that are extremes of the public's buying preferences. We've compiled several interesting tidbits from last year's sales right here for your enjoyment. More than half of Mazda's sales were of CX-5s Yes, over half of all Mazda sales were of this one model. The company sold 300,325 cars in America last year, and 150,622 of them were CX-5 crossovers, or 50.1 percent. Just for emphasis, that means the other 49.8 percent of Mazda's sales were split among five other models, the Miata, 3, 6, CX-3 and CX-9. Breaking that down further, the second-best seller was the Mazda3 at 64,638, which isn't even half of the CX-5's sales. People are crazy for Mazda's middle crossover. Volkswagen actually sold more cars than crossovers It's clear that the crossover is the future king of car sales. For most mainstream brands, it already is. Chevy, Ford, Honda, Toyota, Subaru, Mazda and Nissan all sold more crossovers and SUVs than they did conventional sedans and hatchbacks. There are holdouts, though, and one of them is Volkswagen. At the end of 2018, the company sold 189,343 cars and 164,721 crossovers in the U.S. So that's one win for the classic car set, and it's justification for VW to maintain its car line for the foreseeable future. It's a bit of a hollow victory, though. Look closer and you'll see that car sales were down 28 percent from 2017, when VW sold 262,029 cars. Crossovers, on the other hand, jumped 112 percent from 2017 when 77,647 crossovers moved through U.S. dealers. So expect the tables to turn very soon. Mustang is still the muscle-car sales king, but Challenger is the only one to improve Once again, the Ford Mustang topped the muscle-car sales charts, beating out the Dodge Challenger and Chevy Camaro. Ford moved 75,842 of the ponies in 2018, while Dodge sold 66,716 Challengers for second place, and Chevy sold 50,963 Camaros to bring up the rear.