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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.

M235i outpoints 911, Corvette in CR testing, becomes highest-scoring BMW ever

Good news just keeps coming for BMW, as Consumer Reports has just handed out a stunner of a verdict - the M235i, a spritely, 320-horsepower coupe that starts at just $43,100 has bested the likes of the Chevrolet Corvette Stingray and Porsche 911, vehicles that can easily cost twice as much and come to battle with considerably more power.
CR awarded the spiritual successor to the 1 Series M Coupe a score of 98 out of 100, beating out the 911 and the Stingray by three and six points, respectively. In fact, the M235i is remarkably close to the Tesla Model S' 99, making it one of the highest scores CR has ever handed out. It's also, not surprisingly, the highest-rated BMW ever.
Of the M235i's many attributes, Consumer Reports cited the car's performance potential as well as its quiet ride and comfort for front-seat passengers. While it's a shock to no one, CR called out the limited space in the backseats as well as some finicky controls as this Bimmer's biggest shortcomings.

2015 BMW i8 Beauty-Roll

For those of you paying attention, we've really ramped up the old Autoblog video game these days. Our new series Car Club USA joins Translogic and The List, and there are more Daily Drivers and Short Cuts than ever. But sometimes, all you care about is the car. The Autoblog Beauty-Roll video series has one goal: bring you glossy video images of cars, and nothing but. We're collecting moving pictures of all the cars we test, inside and out. Each episode comes with a hit of engine sound – start-up and with a few revs – to round out the package. Set your resolution to max, kick it into full-screen, turn up the sound, and enjoy today's subject, the 2015 BMW i8. Oh, and if you'd like more Beauty-Roll, click here to see the back catalog.