2011 Mercedes-benz Sl550 Base Convertible 2-door 5.5l on 2040-cars

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2021 BMW M3 and M4 vs all the high-powered sport sedans and coupes

Should you have a found a way to get past that schnoz, you've probably digested some of the basic specs for the all-new 2021 BMW M3 sedan and M4 coupe specs. They're plenty impressive. There's also, basically, two sets of them thanks to the regular and Competition versions that differ in engine output and transmission type.  But how do they compare to other ultra sport sedans and coupes? Well, we were wondering that too, so we fired up the Autoblog Comparison Spreadsheet Generator 5000 (aka me chained to my computer in a dark basement).  Sadly, there are surprisingly few competitors for the 2021 BMW M3. Rival sedans include the Mercedes-AMG C 63 and the Alfa Romeo Giulia Quadrifoglio, along with the Audi RS 5 Sportback sedan/coupe/hatchback thing. There's no more Lexus IS F, the Cadillac CT4 Blackwing has yet to arrive and Jaguar doesn't offer a spicy XE R.  Happily, there are more coupe rivals for the 2021 BMW M4, including the two-door versions of the AMG and Audi as well as the Lexus RC F. I also included the Ford Shelby GT350 and Chevrolet Camaro SS 1LE. On paper, they align incredibly well. On the street and on a track, I can personally attest that these Americans are fully capable of keeping up and/or bettering the fancy-pants luxury brands (and let's not forget there are even more powerful, hardcore versions available). If they don't align in terms of price or prestige, whatever. OK, let's get to the spreadsheet. Let's start with the coupes and note that I didn't bother listing the dimensions for the M4 Competition and C 63 S as they are identical to their "lesser" siblings.  I won't bother burning words explaining what you can see on the chart. Instead, I'll point out a few things that stood out to me. First, BMW M comes awfully close to matching the output of AMG's twin-turbo V8 despite having two fewer cylinders. Similarly, Audi manages to better the 0-60 time of the M4 Competition and tie the C 63 S despite being WAY down on power. It's not like it weighs less. Magic? Second, and speaking of 0-60 times, remember the importance that transmission and drivetrain make with them. It's not just horsepower and torque. An automatic will be quicker and easier to launch than a manual, while all-wheel drive provides more instantaneous and beneficial grip.

Mercedes working on new inline-six engines

Mercedes-Benz will make a return to the inline-six-cylinder engine game, according to a report from the UK's AutoCar. It's not clear what's prompting the phasing out of the current array of V6s.
We'll see the first inline-six from Mercedes in next-generation E-Class, set to debut in 2016. Following that, it'll arrive as part of a mid-cycle refresh for the C-Class in 2017. What's particularly special about the new inline-six is its modular nature, which will allow Mercedes to eventually spinoff three- and four-cylinder options, with the three-pot arriving alongside the new inline-six.
In other news, AutoCar uncovered some details on the next C-Class AMG, which will ditch its excellent 6.2-liter, AMG V8 in favor of a 4.0-liter, twin-turbocharged V8, although we've already told you about that. What we didn't know at the time, though, was that the 4.0-liter would be paired first with a new, seven-speed AMG Speedshift transmission and offer all-wheel drive. AC also reports that a nine-speed Speedshift is in the works.

2017 Mercedes-AMG C63 Coupe unleashed with 503 hp [w/video]

The Mercedes-AMG C63 Sedan is a truly fantastic car. The recently revealed Mercedes-Benz C-Class Coupe is a seriously pretty two-door. Combine the two, and you get the 2017 Mercedes-AMG C63 Coupe that'll debut at the Frankfurt Motor Show next month. The AMG C63 Coupe takes everything we love about the sedan and puts it into the sleeker coupe body. It's equal parts aggression and elegance, and it's got the performance and luxury substance to back up both of those attributes. Under the hood is the same twin-turbo, 4.0-liter V8 as the C63 sedan, with two different states of tune. Standard C63 models get 469 horsepower and 479 pound-feet of torque, while the C63 S ups those numbers to 503 and 516, respectively. Running to 60 miles per hour takes 3.9 seconds in the standard car or 3.8 seconds with the S, and the coupes are limited to either 155 or 180 miles per hour, depending on specification. Both versions of the C63 use Mercedes' AMG Speedshift seven-speed automatic transmission. Inside, it's all C-Class Coupe, which is to say, it's lovely. Same goes for all of the ride and handling bits – there's no doubt in our mind that the C63 Coupe will be just as much fun as its four-door sibling on both road and track. We'll see the AMG C63 Coupe next month, but American deliveries won't start until the summer of 2016, hence the 2017 model year designation. We're licking our chops in anticipation. The sportiest C-Class ever Mercedes-AMG is setting another milestone in the brand's history: the new 2017 AMG C63 Coupe is the next step on the way to more technical and visual distinctiveness. The far-reaching technical modifications are evident at first sight: strikingly flared front and rear wheel arches, an increased track width and larger wheels give the C63 Coupe a muscular look while also providing a basis for highly agile longitudinal and lateral dynamics. The brand's typical "Driving Performance" is also taken to new heights with the C63 Coupe. The AMG 4.0-liter V8 biturbo engine, with 469 hp in standard trim or 503 hp in the C63 S, is a completely in-house development from Affalterbach. In addition, the sophisticated AMG RIDE CONTROL suspension with electronically controlled shock absorbers, the set-up of the AMG DYNAMIC SELECT transmission modes, the rear-axle limited-slip differential and the dynamic engine mounts have all been developed by AMG. The C-Class is Mercedes-AMG's best-selling model and forms the backbone of the company's success.