2006 Bmw Z4 Coupe Convertible Low Reserve on 2040-cars

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BMW reveals M4 safety car with innovating water injection system [w/video]

Racing series don't just pick their safety cars at random, or use just whatever car is lying around. These days the car that sets the pace at the front of the pack is typically provided through consideration by a sponsor. In the MotoGP series, that's BMW and its M division, which have served up the Official Car of MotoGP since 1999. What you're looking at is the latest, and it packs some innovative technology on board. Aside from the matte black wrap with BMW's iconic striped livery, upgraded aero kit, retrofitted interior and emergency equipment, this BMW M4 coupe packs a new injection system under the hood. Only instead of injecting fuel, it injects water into the combustion chamber – something that wouldn't usually be recommended, but BMW insists actually aids in the combustion process. The idea is that the temperature of the air being mixed with the fuel inside the engine is usually hotter than ideal, so the system injects a fine mist of water into the collector in order to reduce the air's temperature... sort of like one of those hydrating misters at an amusement park or outdoor mall, but in an even hotter environment. The system brings the temperature of the air down to a more optimal temperature, helping it combust better. The process is said to yield a number of positive effects. For one, it reduces knocking. For another, it can make more out of lower-octane fuel where higher octane isn't available. It also can control the adverse effects of higher ambient temperature on the combustion process. But most of all, it increases output and reduce fuel consumption by around eight percent. Whether that eight percent is worth the added weight of the system – particularly with water pump and a 1.3-gallon tank in the trunk – is up for debate. But we'd imagine that the Bavarian engineers have weighed very carefully. Of course there's also the matter of refilling the water tank, which BMW says would be carried out whenever the safety car is refueled, but in real-world conditions would only necessitate attention once every five top-ups at the gas station. By now you might have guessed that BMW probably didn't develop this system just for the MotoGP safety car, and isn't planning on keeping it confined to the racetrack. Instead it's being tested and demonstrated on the safety car before being rolled out on production models in the future.

BMW M4 versus Audi RS5 | Autoblog Podcast #546

On this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Associate Editor Reese Counts. We debate the merits of the BMW M4 and the new Audi RS5 and our hopes for the refreshed Mercedes-AMG C63. We also discuss the state of Cadillac, the future of the Ford Fusion and the rumored Mercedes-AMG competitor to the Porsche 718 Boxster and Cayman. Autoblog Podcast #546 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2018 BMW M4 versus 2018 Audi RS5 Cadillac and Mercedes-AMG sport coupes The state of the luxury car industry The future of the Ford Fusion Replacement for the Mercedes-Benz SLC Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Design/Style Podcasts Audi BMW Cadillac Ford Lexus Lincoln Mercedes-Benz Convertible Coupe Crossover SUV Luxury Performance bmw m4 mercedes-amg c63

Jeremy Clarkson chooses his top 10 cars for 2015 and 2016

Jeremy Clarkson is well-known for his role as co-host on the old Top Gear. But the frontman of the upcoming Amazon Prime Show, The Grand Tour, also has a standing column for The Sunday Times in the UK where he reviews the latest cars. With fall nearing, Clarkson put out a list of his top-10 cars from this year and 2015. Some on the list will surprise you, while others represent everything we've come to love about Clarkson. In order to make his list of star cars, the vehicles must offer what co-host James May calls "the fizz." The vehicles, Clarkson claims, have something that is out of the ordinary. Whether it's the car's looks, the way it gets up to speed, or its high-tech gadgets, Clarkson's top-10 list is made up of items that are more than just tools for getting from point A to B. So which ones made the list? Head over to the column in The Sunday Times. Mazda MX-5 Miata 2.0 Sport Recaro Alfa Romeo 4C Coupe Mercedes-AMG GT S Ford Focus RS Ford Mustang Fastback 5.0 V8 GT Volvo XC90 D5 AWD Vauxhall Zafira Tourer 1.6 CDTi Tech Line BMW M2 Ferrari 488 GTB Lamborghini Aventador Related Video: Featured Gallery Jeremy Clarkson's Star Cars For 2015 and 2016 View 11 Photos News Source: The Sunday TimesImage Credit: STEFAN HEUNIS / AFP / Getty Images Celebrities BMW Ferrari Ford Lamborghini Mazda Performance bmw m2 ferrari 488 gtb