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Electric living with a BMW i3

Rarely in the 27-plus years I've been testing and writing about cars has any vehicle changed this much from my initial impression until I was later able to spend more time in one. Nearly two years ago, I got a brief test drive of the then-new BMW i3 EV on a selection of both flat and hilly, curvy roads west of Los Angeles the day before LA Auto Show press days. My impressions at the time were mixed: polarizing exterior and interior designs but roomy, easily accessible rear cabin; great twisty road handling but somewhat brittle rough-road ride; good performance but annoyingly strong (always on) regenerative braking. And there was no opportunity to test one with the optional range-extender (which BMW calls a "REx") engine. So I wanted an extended experience in a REx-equipped i3, and recently got one. And, I'm here to report that, driving it for a week like I owned it, the quirky i3 soon won me over. The quirky i3 soon won me over. The $42,400 BMW EV's unique, lightweight "LifeDrive" architecture features a Carbon Fiber Reinforced Plastic (CFRP) passenger cell on an all-aluminum chassis. Powered by a 22-kWh lithium-ion battery pack, its 170-hp AC synchronous motor spins out a healthy 184-pound-feet of torque through a single-speed transmission and offers three drive modes: Comfort, Eco Pro (which BMW says adds roughly 12 percent of range) and Eco Pro+ (another 12 percent). The optional rear-mounted 647 cc (0.65-liter) in-line 2-cylinder REx engine drives an electric generator, never the wheels. It increases the sticker price to $46,250 and curb weight from 2,860 pounds to 3,130 lb., and that 270-lb. weight penalty reduces its electric-only range from 81 to 72 miles and EPA-rated combined (gas-equivalent) fuel economy from 124 to 117 MPGe, and slows its 0-60-mph acceleration from 7.0 to 7.8 sec. But it nearly doubles the i3's official EPA-rated total range from an EV-only 81 miles to an EV-plus-gasoline 150 miles. The i3 arrived (from roughly 90 miles away) with its battery depleted but an indicated 75 miles of gas-powered range remaining. Wanting to experience it REx-only at first, I drove it on a 9.6-mile local trip and found little difference in sound or performance from what I recalled from that California battery-only test drive. When I returned home, however, the indicated gas range was just 55 miles, so I had used 20 miles of projected range in less than 10 local miles. My initial impressions were good, with a few quibbles.

Driving the 2021 Chevy Tahoe and big news from Hyundai | Autoblog Podcast #640

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Joel Stocksdale. They discuss some of the big trucks Joel drove: the 2021 Chevy Tahoe and a Mil-Spec-modified Ford F-150. After that is a look at the latest car news including Trofeo versions of Maserati's sedans, Hyundai's new electric brand called Ioniq, and the BMW M3 Touring station wagon and Hyundai Elantra N-Line. They wrap things up with some musings on anniversary of the 19th Amendment to the Constitution and how cars played a role in it. Autoblog Podcast #640 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 Reviews2021 Chevy Tahoe Mil-Spec Ford F-150 Maserati Ghibli and Quattroporte Trofeo models revealed Ioniq becomes EV brand for Hyundai 2021 Hyundai Elantra N Line revealed BMW finally announces an M3 station wagon The 19th Amendment and how cars fit in Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Government/Legal Green Podcasts BMW Chevrolet Ford Hyundai Maserati

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.