2009 Mercedes-benz Cl-class on 2040-cars

Auto blog

VW joins Daimler's protest of new A/C refrigerant as EU deadline for compliance passes

The case of Dupont and Honeywell's refrigerant R-1234yf is doing the exact opposite of keeping things cool. The two chemical companies have spent years and hundreds of millions of dollars developing R-1234yf to replace R-134a, the new refrigerant shown to be 99.7-percent kinder to the environment than the one it is meant to succeed. Part of that development has been years of testing by governments, outside safety agencies and automakers to approve the chemical for use in cars. It passed the protocols necessary for the European Union to declare that new and significantly revised cars from 2013 onward needed to use R-1234yf, and mandated that every car as of 2017 must use it.
Enter Daimler AG. The automaker created a head-on collision test with a B-Class at their Sindelfingen test track that would lead to the pressurized refrigerant being sprayed on the engine. The result in 20 out of 20 test was that the refrigerant burst into flames as soon as it hit the hot engine, while Daimler says that R-134a does not catch fire in the same test. Another unexpected result of the R-1234yf test was the release of hydrogen flouride, a chemical far more deadly to humans than hydrogen cyanide, emitted in such amounts that it that turned the windshield white as it began to eat into the glass.
Said a Daimler engineer in a Reuters piece, "It was scarcely believable. The most complicated lab tests conducted using the most sensitive measuring instruments around found nothing and all we do is drive a car around a couple of times, open a tiny hole in the refrigerant line and the next thing you know the car is on fire." So Daimler said it wouldn't use the refrigerant, and it recalled the cars it had already shipped with R-1234yf.

Nissan GT-R, Armada and the new Kia Sorento | Autoblog Podcast #658

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder and Road Test Editor Zac Palmer for the final episode of 2020. They've been driving some interesting cars, including the Nissan GT-R, the new Nissan Armada, a Mercedes-Benz GLA and a pair of new-gen Kia Sorentos. They talk a bit about an interesting new EV called the Ace from Alpha Motor Corporation. Finally, the trio takes turns talking about their favorite cars they drove this year. Enjoy, and we'll be back with more episodes in 2021. Autoblog Podcast #658 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown What we're driving:2021 Nissan GT-R 2021 Nissan Armada 2021 Mercedes-Benz GLA 2021 Kia Sorento Alpha Motor Corporation unveils Ace electric coupe Our favorite cars of the year: Zac: Lotus Evora GT John: Polestar 2 Greg: McLaren GT Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Green Podcasts Kia Lotus McLaren Mercedes-Benz Nissan Coupe Crossover SUV Electric Luxury Performance Sedan Polestar

Mercedes previews new S-Class convertible

Mercedes keeps on expanding its flagship S-Class with more models, and will soon add one more to the roster. But before it does, it's giving us this teaser of what's to come with an advanced look at the upcoming new S-Class Cabriolet. The convertible model will be based closely on the S-Class Coupe we already know, only with a folding roof. Expect that dropping top to be constructed of several layers of fabric (as opposed to a folding metal top) with a glass rear window (instead of plastic) to keep it luxuriously isolated and insulated from the outside world when it's up, and let the wind and sunshine in when down. The Cabrio will bring the array of body-styles in the S-Class range up to six, with the convertible joining the existing coupe and four wheelbase lengths of sedan. Expect powertrain options to closely mirror those of the coupe, including S550, S63, and eventual S65 AMG models driving the rear wheels or all four. Slotting in above the E-Class Cabriolet, the new convertible S-Class will be Daimler's "first luxury four seater cabriolet since 1971." It'll compete in rather rare company against the likes of the Bentley Continental GTC, Aston Martin DB9 Volante, Maserati GranTurismo Convertible, and even the upcoming new Rolls-Royce Dawn when it arrives. And judging from the timing of this preview rendering's release, we anticipate it'll arrive soon. Related Video: