1977 Mercedes Benz 450sel 6.9 Euro 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.

Meet Buster, this 1968 Porsche racecar transporter from Mercedes

If you're thinking about Porsche and Mercedes-Benz when it comes to motorsports, your first thought is probably on the two German brands battling on the track. However, for decades, whenever Porsche's factory team went to compete, a custom Mercedes was right along with them hauling the racecars. These days the truck lives in the Brumos Collection in Jacksonville, FL, and goes by the nickname Buster. However, its story goes back to 1968 when Porsche ordered two commercial vehicles from Mercedes and then handed them over to a Stuttgart-based outfitter for customization. The results were these racing transporters that hauled models like the 917 and 956 until the '80s. The other survived, too, with a place in Porsche's collection. Well-known racers in their own right, Brumos scooped up the transporter in 2003 and have kept driving it to vintage racing events. The interior now boasts the signatures of many of the great drivers from the era of this historic truck. Watch the video for the whole story on the Mercedes with a whole lot of Porsche inside.

Mercedes-Maybach rolls out new S, GLS and EQS SUV Night Series

Mercedes-Maybach is embracing a new look for what it hopes will be a new generation of buyers — one keen to embrace its new electrified luxury models. The new Night Series will be offered on all three models in the current Maybach lineup, with the S-Class and EQS SUV variants arriving later this year and the GLS following in early 2024. While the execution off each Night Series is dependent on the model in question, they share a few common elements. Their headlights, for instance, are all embellished with dark chrome Maybach logos on rose gold trim. You'll find that dark chrome just about anywhere you'd normally spot bling, from the grille and exterior trim to the coating on the rear exhaust finishers. And then there are those wheels. I don't know what to say, quite honestly. Just look at them. And while you're at it, peep at the running boards on the EQS SUV.  While the cars shown here are quite uniform, differentiation will come in the form of finish choices and further individual customization. All three are offered with the Obsidian Black/Mojave Silver two-tone combination shown here. The EQS SUV will also be available in Obsidian Black and Manufaktur Diamond White finishes, the S-Class can be done up in various grey, black and white hues, and the GLS can be had in white or Obsidian Black.  Inside you'll find herringbone-patterned, open-pore wood with aluminum accents along with another smattering of dark chrome. The EQS SUV and GLS can optioned with with Nappa leather in two-tone Crystal White/Black Pearl or just plain Black Pearl. In the S-Class, you can do Nappa leather in either Deep White/Black Pearl or straight Black Pearl.  Look for more on the Mercedes-Maybach S-Class and EQS SUV Night Series soon, with more to come on the GLS variant as its arrival draws closer.  Related video: 2022 Mercedes-Maybach S 580 walkaround