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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.

2015 BMW 228i Convertible

BMW history is littered with small, four-seater convertibles that offer style, spirited performance and driving flexibility. These days it's the 2 Series range, not the 1 or the 3, that carries on the droptop-driver's-car tradition, and the 2015 228i Convertible will the first flavor of it to hit US shores. With prices starting in the upper $30k range, conservative but attractive exterior styling and just enough interior comforts and amenities to feel like a true-luxury player, the 228i makes a strong initial case for itself as either a first or second vehicle. Concurrent with my First Drive of the 2015 BMW X6 M, the Germans brought along their new 2 for testing along some pretty mellow Texas driving routes outside of Austin. With roads that ranged from sweeping country lanes to small town streets, and weather changing handily from cold and misty to bright and warm, I got a good sample of what the new open-top 2 can do. Drive Notes I'll admit to getting behind the wheel of the 228i convertible with a bit of a bias: the old 1 Series line, including the droptop, was amongst my favorite BMW models in years. In terms of overall character, this 2 Series has mellowed a lot versus the chuckable, cheerful 1er. The steering response isn't quite so whip-fast, and the longer wheelbase means it's less willing to rotate overall. Of course, the 2, especially in convertible form, does feel better suited for the stereotypical small, premium convertible driver, too. Ride quality over our mostly smooth-road drive route was placid and controlled, and steering still felt steady and weighty on center and with lock added in. The car also offers really well-sorted protection from wind buffeting and noise, both with the top raised and lowered. I drove topless on the highway and on surface streets, and was impressed at how cozy I felt with the wind deflector erected and the windows up. Cold-weather convertiblers should do well with this BMW (especially when the xDrive AWD car launches, later in the year). Erect the folding soft top – a feature that's available at speeds up to 30 miles per hour – and the NVH experience is transformed. BMW says that the top-up wind noise has been reduced "by half" versus the 1 Series – a fact that I had no trouble believing after the first few seconds. Wind rush is basically eliminated with the roof raised, and the car becomes a downright conversational space thusly set up.

BMW i3 gets official worldwide

Even though we recently drove a near-production version of the BMW i3, the car still wore light exterior and interior camouflage. Today, BMW took off that little bit of camo and made a big announcement: The i3 will go on sale in the US for $41,350 in the second quarter of 2014. That does not include any state or federal incentives that could lower the price or the $925 destination fee. The i3 will debut with three trim levels, which BMW is referring to as Worlds: Mega (standard in the US), Giga and Tera.
The BMW i3 is chock-full of new technology afforded by its design as an EV from the start of development, which has resulted in a vehicle layout unique to the i3. BMW has named it LifeDrive architecture, and it features the Life Module and the Drive Module. The Life Module is the i3's pillar-less passenger cell, which is the first mass-produced monocoque made of carbon fiber reinforced plastic (CFRP). The tougher-than-steel material is also 30-percent lighter than aluminum, which contributes to the i3's relatively light weight of 2,700 pounds (preliminary US figure) and, in turn, increases its energy efficiency. Expect more of this technology to find its way into future BMWs.
The Drive Module, a 100-percent aluminum chassis mounted under the Life Module, houses everything that makes the i3 go. It includes the 22-kilowatt, 450-pound lithium ion battery mounted as centrally as possible, and provides power to a rear-mounted electric motor that turns the rear wheels. With 170 horsepower and 184 pound-feet of torque from zero rpm, the single-gear i3 can accelerate from 0-30 miles per hour in 3.5 seconds and 0-60 mph in about 7.0 seconds, but it has a top speed of only 93 mph. BMW says the i3 has a real-world EV range of 80-100 miles, and the standard charger can fill the battery in three hours. Opt for the SAE DC Combo Fast Charger and 30 minutes is all it takes for a full charge; 20 minutes will bump the battery to 80 percent. For customers who have range anxiety, BMW gives them the option to install a 34-hp, 650cc two-cylinder generator as a range extender for the electric drive system.