2011 Audi S5 Prestige Meteor Grey Metallic W/ Magma Red Interior on 2040-cars

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Which would you rather have, Audi's RS5 or Mercedes' C63 AMG 507?

If you're in the market for a German sports coupe with a naturally aspirated V8, run, don't walk, to your nearest dealer because they are going to be gone very soon. European fuel economy and emissions rules have conspired to force automakers into seeking forced-induction mills. Motor Trend personality Jonny Lieberman is hosting the retirement party in the latest Head 2 Head video, where he takes on the 2014 Audi RS5 and 2014 Mercedes-Benz C63 AMG Edition 507 to decide which is the ultimate Teutonic V8.
To make the decision harder, Lieberman challenges the duo on the first soaking wet roads that Southern California has seen in ages. It forces the coupes to confront some of the actual weather that the rest of the country encounters regularly and serves to even the playing field somewhat between the charismatic rear-drive Mercedes-Benz and the all-wheel drive Audi.
It really is the end of an era for these coupes. The next Audi RS4 is rumored to switch to a twin-turbo V6, and while Mercedes won't officially admit it, the next C-Class AMG will likely switch to a 4.0-liter twin-turbo V8. And we already know the next BMW M3/M4 will rely on a 425-horsepower, 3.0-liter inline-six. Let's enjoy these eight-cylinder German giants while we can, and scroll down to watch the video.

2016 Audi SQ5 TDI Plus a quick sprinter with 35 mpg

Not only does Europe get cool diesel-powered models, but occasionally, some of those oil-burners are of the high-performance variety. Take the Volkswagen Golf GTD, Audi Q7 V12 TDI, and now this, the new Audi SQ5 TDI Plus. In this new form, the 3.0-liter, turbodiesel V6 is very nearly as powerful as the supercharged V6 available in the US-market SQ5, producing 340 horsepower. That's 27 more than stock, for those keeping track at home. In terms of torque, of course, the diesel-powered SQ5 just embarrasses the gas-powered CUV. Torque is up 37 pound-feet to a thumping 516 lb-ft. We'll go ahead and classify that as a lot. This extra output allows the SQ5 TDI Plus to hit 62 miles per hour in just 5.1 seconds, matching the supercharged model we have access to here in the US. The top speed, as with the gas-powered model, is limited at 155. Unlike North America's CUV, though, fuel economy is very impressive. European drivers can expect the equivalent of 35.6 miles per gallon, compared to just 24 mpg with the gas engine. We have a full set of images of the new SQ5 TDI Plus from the floor of the 2015 Frankfurt Motor Show. Scroll up and check them out. Related Video: Even more power and top-of-the-line equipment: The Audi SQ5 TDI plus with 250 kW (340 hp) - The SQ5 TDI plus will launch on the German market in October 2015 - 700 Nm of torque; from 0 to 100 km/h in 5.1 seconds - On request, exclusive equipment package from quattro GmbH Audi is further expanding its range of S models. In October, the new SQ5 TDI plus* will arrive at German dealerships with more power and driving pleasure and even more extensive equipment – with 250 kW (340 hp), sport differential and 21-inch wheels. Even in its basic version, the successful Audi SQ5 TDI* comes as an SUV with the performance of a sports car. The plus version has an even higher power output. The biturbo V6 TDI produces 250 kW (340 hp) from its three liters of displacement by way of increased injection pressure. This results in 20 kW/27 hp more power compared to the SQ5 TDI. Its peak torque is increased by 50 (36.9 lb-ft) to 700 Nm (516.3 lb-ft). The powerful diesel SUV accelerates from 0 to 100 km/h (62.1 mph) in just 5.1 seconds; the top speed is electronically governed to 250 km/h (155.3 mph). In the NECD cycle, it merely requires 6.6 liters of fuel per 100 kilometers (35.6 US mpg) with emission of 174 g CO2/km (280.0 g/mi).

2014 Audi RS5 Cabriolet [w/video]

Brash Bruiser Loses Top, Gains Weight, Still Makes Friends
Everything we said after driving the RS5 coupe still rings true, even after Audi has gone and ripped off its metal roof, replaced it with a big cloth version, and tossed us the keys. The 2014 Audi RS5 Cabriolet is another bold, big-boned airmobile to make open-top lovers swoon. There is absolutely nothing revolutionary to speak of here versus its hardtop counterpart, frankly, but tear-assing through the southern French hills as the brilliant sun warmed us is plenty good reason to talk a lot about it anyway. And hey, it beats frigid January in Detroit, where the RS5 Convertible is shortly to receive its US introduction.
One issue that could corrupt things a bit is the convertible's added weight factor. It's one thing when an Audi TT removes its top and gains 176 pounds, or when a Porsche Cayman morphs into a Boxster and gains 66 pounds; the effect on dynamics will still be acceptable. But when it comes to a huge-roof coupe like the RS5, that gain in mass becomes 400-plus pounds in cabrio form, for a grand curb weight of 4,461 pounds. As a number attached to this size of a car that's also branded with an RS badge promising raciness, we admittedly fretted. Then we drove the Audi RS5 Cabriolet to cheer up.