2007 Mercedes-benz Cls-class Cls 550 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.

An assortment of emblematic supercars is headed to auction

Auction house RM Sotheby's is giving enthusiasts the chance to bid on the supercars that they had posters of when they were kids. It's organizing a live sale in Miami, Florida, in December 2022 that's limited to 60 high-end models built between the 1970s and the 2010s. The oldest car in the catalog is a V12-powered 1974 Jaguar E-Type, though keep in mind that only 20 of the 60 available slots have been filled so far. At the other end of the spectrum, the newest model is currently a 2014 BMW M5. If your automotive tastes are firmly anchored in the 1980s, there's a wide selection of cars to choose from such as a 1989 Lamborghini Countach 25th Anniversary Edition and a 1987 Porsche 911 Turbo with a flat-nose conversion. If your heart belongs in the 1990s, RM's sale includes a 1990 Lamborghini LM 002, a 1995 Ferrari 512 M, and a 1996 Porsche 911 Turbo. Bentley models and a 2008 Mercedes-Benz SLR are among the newer classics. Carmakers weren't alone in pursuing speed, style, and extravagance in the 1980s; tuners fought hard for a piece of the pie as well, and RM's sale reflects that. Collectors will get the rare opportunity to bid on a number of pre-merger AMG models like a 1982 Mercedes-Benz 500SL 5.0 (R107), a 1987 Mercedes-Benz 560SEC 6.0 (C126) with a wide-body kit, and a 1989 Mercedes-Benz 560SEL 6.0 (W126). BMW-based Alpina models are well represented, too: RM accepted a pair of 6 Series-based 1987 B7 coupes and a 3 Series-based B6 2.8.  There are several slots left so it's not too late to submit your car. If you're a buyer, plan on being in Miami on December 9 and 10, 2022. We suggest clearing up space in your garage first: every car is offered with no reserve, so the selling price will be the highest bid. Related Video This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery RM Sotheby's supercar sale in Miami View 44 Photos Ferrari Jaguar Mercedes-Benz Porsche Auctions Luxury Supercars Classics

2016 Mercedes-Benz C450 AMG Sport First Drive

A. M. G. Those three letters carry a lot of weight, especially to those who firmly believe that AMG is the hallowed performance pinnacle of the Mercedes-Benz brand. Those purists probably lifted an eyebrow at the front-drive platforms behind the CLA45 AMG and GLA45 AMG, and virtually every AMG-branded SUV that has hailed from the tuner-focused nameplate. But they might want to consider a second look at the 2016 Mercedes-Benz C450 AMG Sport. No, it's not a full-blown, fire-breathing AMG like the C63, and it doesn't get the newfangled "Mercedes-AMG" nomenclature. But after spending some seat time in the C450 AMG Sport, there's a decent chance you'll be quite alright with that. Inside and out, the C450 bears a strong visual resemblance to the mean looking, V8-powered, 469-horsepower C63 and its even fiercer, 503-hp, C63 S variant. The C-Class cockpit feels a bit snugger than you might expect considering its exterior proportions, particularly from the passenger seat. On the other hand, the new C-Class is also quite a bit more nicely appointed than its predecessor, which has inspired more than a few comparisons to the super posh S-Class. As for the C450 AMG, its more purposeful design cues and sportier details lend it a buttoned-down, modern feel. The biggest differentiator between the C and CLA class, however, is the rear of the cabin: the C's back seats are considerably roomier than the entry-level CLA's posterior perches. In place of V8 power, the modest 450 AMG packs a more reasonably endowed twin-turbocharged, 3.0-liter V6 that pushes 362 hp and 384 lb-ft of torque through a 7G-Tronic Plus automatic gearbox (in place of the the C63's dual-clutch seven-speed). Power is routed through all four wheels with a 66-percent rear, 33-percent front torque split. For some numerical context, the C450 AMG exceeds the C400 by 33 hp and the C300 by 121 hp, while it lags behind the C63 by a rather significant 107 hp. Crucially, the six-banger helps shed between 231 and 242 pounds compared the C63 models – this, despite a heavier all-wheel-drive arrangement, as opposed to the C63's rear-drive configuration. The C450 AMG shares a few pieces of hardware with its big brother AMG sibling, including the front axle, electromechanical steering, and upgraded brake setup (though you can't get carbon ceramic stoppers like you can in the C63 S).