1987 Mercedes-benz 500-series Sel on 2040-cars

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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.

Autoblog's guilty pleasure cars

Guilty pleasures are part of life – don't even try to pretend like you don't have one (or two, or six). In the non-automotive space, this could come down to that secret playlist in your iPhone of songs you'll only listen to when you're alone; or think of that one TV show you really do love, but won't admit to your friends. I've got plenty, and so do you. Going back to cars, here's a particularly juicy one for me: several years ago, I had a mad crush on the very last iteration of the Cadillac DTS. Oh yes, the front-wheel-drive, Northstar V8-powered sofa-on-wheels that was the last remaining shred of the elderly-swooning days of Cadillac's past. Every time I had the chance to drive one, I was secretly giddy. Don't hate me, okay? These days, the DTS is gone, but I've still got a mess of other cars that hold a special place in my heart. And in the spirit of camaraderie, I've asked my other Autoblog editors to tell me some of their guilty pleasure cars, as well – Seyth Miersma, as you can see above, has a few choice emotions to share about the Mitsubishi Lancer Evolution. Read on to find out what cars make us secretly happy. Mercedes-Benz SL65 AMG This decadent convertible is the epitome of the guilty pleasure. It's big, powerful, fairly heavy and it's richly appointed inside and out. It's a chocolate eclair with the three-pointed star on the hood. Given my druthers, I'd take the SL65 AMG, which delivers 621 horsepower and 738 pound-feet of torque. That output is borderline absurd for this laid-back convertible. I don't care. You don't need dessert. Sometimes you just crave it. The SL line is about the feel you get on the road. The roof is open. The air, sun and engine sounds all embrace you. It's the same dynamic you could have experienced in a Mercedes a century ago, yet the SL gives you the most modern of luxuries. An Airscarf feature that warms my neck and shoulders through a vent embedded in the seat? Yes, please. Sure, it's an old-guy car. Mr. Burns and Lord Grantham are probably too young and hip for an SL65. I don't care. This is my guilty pleasure. Release the hounds. – Greg Migliore Senior Editor Ford Flex I drove my first Flex in 2009 when my mother let me borrow hers for the summer while I was away at college. The incredibly spacious interior made moving twice that summer a breeze, and the 200-mile trips up north were quite comfortable.

Mercedes-Maybach spied inside and out sporting the huge S-Class screen

A new Mercedes-Benz S-Class is well on its way, and that means a new Mercedes-Maybach is following right behind it. We were introduced to the new Mercedes-Maybach strategy over five years ago. At the end of 2019, Mercedes added to the small collection with the GLS 600, bringing an SUV into the Maybach fold. These spy shots mark our first good look inside and outside the next-gen Mercedes-Maybach sedan. We’ll point out the massive screen first. Photos of this huge slab of screen have largely shown it turned off. Now, we get a solid look at the display all lit up and running MercedesÂ’ next iteration of MBUX. The icons and UX look a whole lot like MercedesÂ’ current infotainment system design, just blown up to a much larger size. Mercedes is surely going to hit us with some new out-there features we didnÂ’t know we wanted and may not even use, but thatÂ’s the way it goes with excessive luxury. The gauge cluster is pretty standard for new Mercedes with a flat digital screen. An “EQ” emblem displayed in the cluster also indicates that Mercedes plans to implement its EQ Boost mild-hybrid tech with the turbocharged engine(s) offered in this new generation. The current car comes in S560 (V8) and S600 (V12) variations. We don't know what MercedesÂ’ powertrain plans are for the time being, but the GLS 600 uses 48-volt technology with its 4.0-liter twin-turbo V8 and makes 550 horsepower and 538 pound-feet of torque. Ideally, the smooth and silky V12 sticks around in the top-shelf S-Class as well. As for the design, itÂ’s exactly what one might expect from a Mercedes-Maybach. The wheelbase is stretched compared to the regular S-Class weÂ’ve spied before, and it has the signature slatted grille. Pop-out door handles appear to be carried over from the new S-Class, too. We expect the new S-Class isnÂ’t far from a reveal. ThereÂ’s a chance it still breaks cover this year, even as most automakers face delays from the coronavirus. Once itÂ’s out, the Mercedes-Maybach is likely to follow soon after. Related video: