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Junkyard Gem: 1981 Cadillac Eldorado with V8-6-4 engine

Skyrocketing fuel prices caused by geopolitical events in 1973 and 1979 led to gas lines, federal fuel economy requirements, and an increasing reluctance on the part of American car shoppers to buy big, thirsty Detroit luxury machines. General Motors had pulled off some amazing technological feats in the past — the small-block Chevrolet V8 engine and Hydramatic transmission being two extraordinarily successful ones — and so Cadillac's bosses figured that a combination of computer wizardry and clever mechanical engineering would give the 368-cubic-inch Cadillac V8 a cylinder-deactivation system and resulting superior fuel economy. Here's a very rare example of one of those 1981 Cadillacs, found in a California self-service wrecking yard. The idea behind the V8-6-4 was that computer-controlled solenoids would physically disengage the rocker arms for one or two cylinders on each engine bank under low-load conditions, converting the engine from a 368-cube V8 to a 276ci V6 or 184ci V4 (that's 6.0, 4.5 or 3.0 liters, respectively, for the metric-system aficionados among us). This sort of variable-displacement magic is commonplace today, but it was science-fiction stuff in 1981. An "MPG Sentinel" display on the dash would let the driver know how many cylinders were active at the moment, and the car would get Chevy Citation fuel economy with Cadillac luxury. The V8-6-4 was the standard engine in all 1981 Cadillacs (except for the Seville, which had the troubled Oldsmobile diesel engine as the base powerplant and the V8-6-4 as an option). Unfortunately, the V8-6-4 worked about as well as the Oldsmobile diesel: very poorly. Within a few years, most owners of these engines had disconnected the rocker-deactivation solenoids and just drove their cars as regular full-time V8s. This one has the snazzy "Cabriolet Roof Treatment" option, which boasted "textured elk grain" vinyl and could be had in one of 17 available colors. Front-wheel drive gave the early-1980s Eldorado plenty of interior space, despite its more proletarian Olds Toronado origins, and these velour-covered seats made for very comfortable road trips. The price tag started at $17,550, or about $51,650 in 2019 dollars. The 1981 Imperial went for $18,311, and that car was based on the same platform as the lowly Plymouth Volare. Meanwhile, A BMW 733i cost $28,945 and a new Toyota Cressida a mere $11,599. The 1981 Cadillacs were just a little too much ahead of their time, it turned out.

Economy-car buyers increasingly get the best deal on technology

One of the great things about technology is – with the exception of Apple products – consumers get more for their money every year. For example, the first 1GB USB drive I bought in 2005 cost me $30. Today you can get 10 for that price, delivered to your door thanks to Amazon. The same goes for car tech. Features such as navigation and Bluetooth started out on high-end vehicles before trickling down to entry-level cars. Same with driver assist features ranging from rearview cameras to forward collision warning with automatic emergency braking — so now it's not only rich people who are protected in car crashes. I've found that this democratization of tech has reached a point where amenities on low-cost cars can be as good — and sometimes even better — than those on vehicles costing tens of thousands of dollars more. While attending a media event for the launch of the all-new 2019 Toyota Corolla Hatchback, I was impressed by the car's cool styling and go-kart performance. Equally noteworthy is the amount of standard tech on the low-cost hot hatch. (Pricing will be announced later this month, but expect it to come in a bit higher that the current Corolla iM's roughly $19,000 base.) Even the base SE CVT trim of the 2019 Corolla Hatchback comes with an 8-inch touchscreen and Toyota's Entune 3.0 infotainment system. Among other features, Entune 3.0 provides Wi-Fi capability, Amazon Alexa connectivity, the Entune App Suite for integration of smartphone apps such as Pandora and Yelp and, for the first time in a Toyota, Apple CarPlay (but no Android Auto). The 2019 Corolla Hatchback is also the first North American vehicle to get the second-generation Toyota Safety Sense (TSS) suite of driver assists that's also standard on the base model. TSS 2.0 includes Toyota's Pre-Collision System (forward collision warning with automatic emergency braking) with new daytime and low-light pedestrian detection and daytime cyclist detection features, lane keeping and lane departure alert with steering assist, auto high beams, adaptive cruise control, and road sign detection. While the 2019 Corolla Hatchback sets a new benchmark in standard tech on a budget-mobile, competing cars aren't far behind. The 2018 Honda Fit LX, for example, includes forward collision warning with automatic emergency braking, lane departure warning and assist and adaptive cruise, while the automaker's Lane Departure Mitigation and Lane Watch camera system is added the two top trims.

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