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IIHS updates overlap test: 2 SUVs get good marks, 9 fare poorly

Vehicles in crashes keep occupants safe by deforming around the cabin in a way that maintains cabin integrity. The Insurance Institute for Highway Safety's moderate overlap test, introduced in 1995, has been a huge contributor to improved safety for front-row passengers in a crash. IIHS President David Harkey said, "Thanks to automakers’ improvements, drivers in most vehicles are nearly 50% less likely to be killed in a frontal crash today than they were 25 years ago." In the 'unintentional side effects' column, crash safety has gotten worse for passengers in the back seats. When carmakers reengineered the front crash structure to protect the driver, more crash forces got distributed throughout the rear. IIHS research claims rear passengers have a 46% greater risk of fatal injury than front-row passengers, but back-seaters haven't benefited from the same upgrades in safety as the front row. The IIHS updated its moderate overlap test to address the issue, putting 15 vehicles through the new regime. Two earned good ratings — the 2023 Ford Escape and the 2021-2023 Volvo XC40 — one was acceptable, three were marginal and nine were rated poor. Every one of the crossovers sampled got good marks for all passengers in the original test. That test sees 40% of vehicle's width on the driver's side impacting an aluminum honeycomb barrier at 40 miles per hour. The updated test puts a crash dummy representing small woman or 12-year-old child in the seat behind the driver, the dummy's sensors and grease paint measuring the effectiveness of the restraints and the forces a human body would need to endure. To achieve a good rating, the "measurements must not exceed limits indicating excessive risk of injury to the head, neck, chest, abdomen or thigh." An institute engineer said, "In real-world crashes, chest injuries are the most common serious rear-seat injuries for adults." The sensors and video evidence showed back seat dummies in the Escape and XC40 endured minimal risk of injuries from excessive crash forces, from submarining under the seat belt, or from unwanted interaction with the side curtain airbag.   The Toyota RAV4 scored acceptable. The second-row dummy also endured minimal risk of injury to the chest and lower extremities. However, the lap belt slipped upward in a way that could increase abdominal injuries, and after the dummy's head dipped during crash impact, the head came back up between the rear curtain airbag and rear window.

The tumultuous history of the diesel engine

Volkswagen, diesel's most enthusiastic patron, deceived everyone about the amount of emissions its cars were putting out. We have covered this latest massive automotive scandal in great detail, and there are surely more fascinating revelations to come. It turns out that this is just the latest episode in the epic story of the controversy and intrigue surrounding the diesel engine, and its inventor. This is the story of the tumultuous birth and interesting evolution of the compression-ignition engine at the center of the VW scandal. Napoleon III Got Rudolf Diesel Deported Rudolf Diesel was born in Paris in 1858. His Bavarian parents had settled in France where his father, Theodor, was a leather goods manufacturer. When the French Parliament declared war on Prussia, kicking off the Franco-Prussian war, the Diesels fled to London. When he was 12, Rudolf went to live with his aunt and uncle in the Bavarian university town of Augsburg. It was his parents' hometown, and importantly, it's where Rudolf began studying at the Royal County Trade School. His time in Augsburg, graduating at the top of his class from trade school that laid the groundwork for all that was to come. Diesel Nearly Blew Himself Up An early career in refrigeration saw Diesel running R&D in Berlin for Linde, a company started by refrigeration pioneer Carl Von Linde, one of Diesel's professors. His ambition to branch out beyond refrigeration, and his deep understanding of thermodynamics, led to efficiency experiments with steam engines. Diesel was trying to create an engine that didn't waste heat from the combustion process, therefore getting the most work out of the fuel. Instead, he was nearly killed when an experimental ammonia vapor steam engine exploded. Recovery took many months, and during some of that time, he was no doubt planning his next experimental engine, based on the theoretical Carnot cycle. His Engine Was An Attempt To Stick It To The Man Steam engines were expensive to run and wasteful. Diesel thought the efficiency of his design would be a way for the small business to compete with the dominant industrial giants. It was, and it did, but big business is equally passionate about chasing efficiency. Diesel engines quickly proliferated in industries both grand and cottage. Rudolf Didn't Really Invent The Diesel As We Know It Instead, he improved an existing one to a significant degree. The Diesel engine could be considered an evolution of the "hot-bulb" engine.

These are the cars being discontinued for 2024 and beyond

While we get new and updated car models every year, its inevitable that we'll need to say goodbye to some nameplates as well. This time around, it feels like we have confirmation or reports of an unusually large number of vehicles being discontinued in 2024 and the coming years.  We shouldn't be surprised. A large number of automakers are approaching their various target dates for electrification of their fleets. As such, some beloved internal combustion cars are going away, sometimes with appropriate fanfare like special editions. Others are slinking away quietly, killed by slowing sales and changing consumer trends. Of course, the end of production doesn't necessarily mean permanent death. Some of these models could be resurrected in later years ... and probably as an EV. With that in mind, here are the vehicles that are being discontinued in 2024 and beyond.   Alfa Romeo Giulia Quadrifoglio and Stelvio Quadrifoglio Alfa Romeo ended the production of its combustion-only Quadrifoglio models in April 2024 as the Italian automaker moves toward an electrified future. This isn't the end of the Quadrifoglio entirely, though, with Larry Dominique, Alfa Romeo senior vice president and head of North America, writing, "I look forward to presenting the next chapter in the four-leaf clover’s journey."   Chevrolet Camaro GM is ending production of the Chevy Camaro after 2024, but is sending it off in style with a CollectorÂ’s Edition. WouldnÂ’t it be cool, though, if Chevy brought it back as an EV?   Chevrolet Malibu Rumors of its demise have been around for a while, but now itÂ’s official. GM will end production of the Chevy Malibu in November of 2024. The assembly line in Kansas will be retooled to build the replacement for the Chevy Bolt.   Dodge Durango The three-row Durango is slated to be replaced by the Stealth nameplate after 2024. The Durango name could make a comeback later, according to rumors, on a body-on frame SUV based on the Jeep WagoneerÂ’s platform.   Ford Edge This is the last year for the Edge in the U.S., with the final unit rolling off the assembly line in April. On sale since 2007, the Edge topped 100,000 sales in all but three full years of production.   Ford Escape Newly refreshed for the 2023 model year, FordÂ’s popular Escape compact SUV is reportedly taking its leave in 2025 in order to usher in — you guessed it — an EV in its place.