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BMW i3 range-extender lawsuit supports Tesla's store argument

Tesla's argument that it needs to own its stores in order to sell its electric vehicles and give customers better information is about to get bolstered by an unlikely source: BMW. The German automaker is the subject of a class-action lawsuit stemming from the performance of the range-extended version of its i3 plug-in. And at least one green-car advocate and i3 owner says the problem could have been avoided by better education at BMW dealerships. The lawsuit was filed in California by some owners of the BMW i3 REx, i.e. the version that's equipped with a gas-powered "range extender," according to Green Car Reports. The issue is that, when the car's battery starts running low and the powertrain is subjected to extended stress, such as a long uphill highway stretch or a fully loaded vehicle, the car can slow from highway speeds to as slow as 45 miles per hour without warning. The claim states that the vehicle can post a danger as a result, while BMW has declined comment, citing pending litigation. Meanwhile, Tom Moloughney, owner of the first BMW i3 REx to be sold in the US, says the problem might rest at the dealership level. Moloughney says that if dealers explained the car's mechanics better – especially the fact that the range extender is essentially a 34-horsepower, two-cylinder motorcycle engine whose power is limited – drivers would be better informed about what could happen when the battery power is sapped at highway speeds. While Tesla EVs don't have the same sort of REx powertrain, this argument nicely dovetails with what Tesla Motors has been saying for a long time, that its cars should only be sold at company-owned stores because third-party dealers are less likely to understand and explain the nuances of electric vehicles. No word on whether Elon Musk's lobbyists are getting together with lawyers representing the Ultimate Driving Machine. Related Video: Featured Gallery 2014 BMW i3: First Drive View 33 Photos News Source: Green Car Reports via Automotive News-sub.req. Government/Legal Green BMW Electric Hybrid lawsuit range extender tom moloughney

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

BMW recalling nearly 570,000 1 Series, 3 Series and Z4 models over electrical issue

BMW is recalling roughly 570,000 vehicles in the United States and Canada due to faulty battery cable connectors that can fail, causing the engines in these cars to stall. Of the nearly 570,000 affected vehicles, just over 504,000 are here in the US.
The affected vehicles include 1 Series coupes and convertibles (both 128i and 135i) from the 2008 to 2011 model years; 3 Series sedans, coupes, convertibles and sport wagons (both 328i and 335i) from the 2007 to 2011 model years; and Z4 roadsters from the 2009 to 2011 model years.
According to the National Highway Traffic Safety Administration, "the connector for the positive battery cable connector and the corresponding terminal on the fuse box may degrade over time," which can eventually lead to a break in the electrical connection and a loss of power in the vehicle. If the car loses power, the engine can stall, which could possibly lead to a crash. The Detroit News reports that BMW knows of one minor collision in Canada as a result of this problem, but no injuries.