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BMW 1 Series prototype packs direct water injection

Just a few months ago, BMW showcased an M4 that was modified to serve as the safety car for the MotoGP racing series. The flashing lights and emergency equipment, however, weren't the only modifications BMW made to the performance coupe. It also packed an innovative new water injection system. And now it's furthering the development of that system by running it in a 1 Series hatchback as well. Revealed at the BMW Group Innovation Days 2015 event, this five-door 1 Series packs a three-cylinder gasoline engine – like the one found in a Mini or i8 – but fitted with the direct water injection system. In this application, the system sprays a fine mist of water – yep, regular old H2O – right into the combustion chamber. While mixing water with gasoline normally wouldn't be recommended, in this case it evaporates immediately and helps cool the engine from the inside, allowing it to run at higher efficiency. That cooler running engine brings with it several benefits. It delivers improved fuel economy and lower emissions, to start. It also allows for an earlier ignition point, higher compression ratio, and higher boost pressure in turbocharged engines, delivering increased output. It even cuts down on engine knocking (where combustion occurs spontaneously), reduces wear and tear on the engine, and makes better use of lower octane levels. If that sounds like a win-win-win... win (we're losing count of all the wins here), it's because BMW just may be on to something. Of course it does require a water tank to be fitted on board, which means added weight, but instead of requiring the driver fill up the water tank, BMW has fitted this prototype with a system that replenishes the water level from the air conditioning system when the vehicle is switched off. So unless it's being driven in a particularly extreme climate, it doesn't even need topping up. Add one more "win" to the list, then. Extra power, improved real-world fuel economy: Direct water injection enhances efficiency. With direct water injection for turbocharged petrol engines, the BMW Group has again succeeded in enhancing the capabilities of conventional engine technology through an ongoing process of refinement and improvement. The precisely controlled injection of water into the engine cylinders produces a cooling effect that boosts power and torque, particularly when operating at or near full throttle, while at the same time reducing fuel consumption and emissions.

2019 BMW M850i xDrive: How it compares on paper with other GT coupes

Although the hot new vehicles for the rich seem to mainly comprise SUVs and supercars, the neglected luxury GT coupe segment is starting to see some life again. The latest to add a spark to this set is the 2019 BMW M850i xDrive. It goes on sale later this year, and revives the 8 Series that's been dead since the 1990s. The first version available to Americans will be one with a twin-turbo 4.4-liter V8, with other versions likely following. Before it launches, we wanted to get a lay of the grand-touring land and see how the new BMW stacks up to the competition in performance, practicality and price. While some of these models have higher-performance or more-affordable iterations, we picked the versions that would be the closest match to this 8 Series model. They include the 2019 Lexus LC 500, 2018 Mercedes-Benz SL 550, 2018 Mercedes-Benz S 560 Coupe and the 2018 Maserati GranTurismo. We will also provide some short summaries on our experiences with these cars, but to get a full picture of each model, be sure to check out their full reviews. And if you want to compare any of these cars with models you don't see here, be sure to try out our car comparison tool. Engines, transmissions and performance On paper, the BMW M850i xDrive is clearly the performer of the group. It has the most power and torque at 523 horsepower and 553 pound-feet. Coupled with all-wheel-drive and an eight-speed automatic, the car is able to overcome its relatively portly 4,478-pound curb weight to hit 60 mph in a scant 3.6 seconds. That's more than half a second quicker than the lightest car in the group, the Mercedes-Benz SL550, which weighs 4,012 pounds. The other three vehicles are in the low- to mid-4-second range to 60 mph. Though the Maserati is the slowest to 60 mph, it does boast the highest top speed of 186 mph. The M850i and SL 550 are electronically limited to 155 mph, while the Lexus is limited to 168 mph. The Mercedes S 560 has the lowest top speed at an electronically limited 130 mph. View 52 Photos Of interest is that there's a 50/50 split among these cars between using a pair of turbos, and having none at all. The BMW and Mercedes resort to forced induction, whereas the Lexus and Maserati choose to stay naturally aspirated. This is likely why the Germans break 500 pound-feet of torque, while the others don't make it to 400. Also interesting is the spread of gear quantity. The Maserati has just six ratios to choose from, and the Lexus has a whopping 10.

2015 BMW X6 M First Drive [w/video]

Please forgive my bluntness, and allow me to cut to the heart of the X6-dissenter argument right at the top. Yes, BMW will sell you a 2015 BMW X5 M that is the motive twin (I assume) of the X6 M you're here to read about, that is also cheaper, roomier, and more conventional in appearance. For many of you – especially the old guard that hears the descriptor "Sports Activity Coupe" and proceeds to unlock the gun cabinet – that's all you need to hear. Because, although the fickle community that consumes and comments on internet car culture seems to be fine with typical-looking SUVs and wagons packing performance-enhancing goodies, the idea of slanting the back of one turns them right off. And yet, BMW continues to sell the things; more than 250,000 units have be delivered in the X6 series' history. As if that weren't proof of concept enough, blood-rival Mercedes-Benz has unleashed the GLE, a coupe-like crossover of its own, complete with AMG pedigree. All of this brought me to Austin, TX, home of Hill Country, The Circuit of the Americas and the 2015 X6 M launch. On both road and track I found a car that was more powerful and blithely capable than ever, while also being exactly as weird to drive as it is a concept to comprehend. Given that the X5 M exists, and offers styling that is more like normal for the SUV genre, both the lovers and the haters of the X6 M are likely to be focused on the way it looks. Here, the 2015 model isn't very much changed from the original, meaning you aren't liable to change sides on the styling debate for this refresh. The '15 model has a slightly fewer black accents on the exterior, along with revised front and rear fasciae and vented (and chromed) front fender gills. The car is almost two inches longer than the existing model, but is near enough the same size in every other direction that you'd have to study the specification sheet to know different. Inside the X6 M that I tested was a beautiful, fully optioned cabin that boasted gripping sport seats and BMW's wide, easy-to-read infotainment screen. The leather-wrapped everything and carbon-fiber trim were both well executed, and my hands rejoiced at the feeling of the thick-rimmed, serious-looking steering wheel. Veterans of the current M5 or M6 will see a lot that looks familiar here, but to my eyes that's high praise. The most impactful changes aren't visual but visceral.