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Tesla Model 3 Falls Short of Consumer Reports Recommendation (cnbc.com)
Consumer Reports published their review of the Tesla Model 3 today. The product review site liked the vehicle's range of the battery and agile handling, but had issues with braking, controls, and ride quality. Overall, it failed to get a recommendation. CNBC highlights the key shortfalls: "Our testers also found flaws -- big flaws -- such as long stopping distances in our emergency braking test and difficult-to-use controls," said a review in the publication. In particular, the car's stopping distance of 152 feet from a speed of 60 miles per hour was slower than any of its contemporaries, including the Ford F-150, a full-size pickup. The location of almost all of Tesla's controls on a touchscreen and the vehicle's ride quality were also factors in the group's decision. Tesla issued a statement in response to Consumer Reports' stopping distance claim: "Tesla's own testing has found braking distances with an average of 133 feet when conducting the 60-0 mph stops using the 18-inch Michelin all season tire and as low as 126 feet with all tires currently available. Stopping distance results are affected by variables such as road surface, weather conditions, tire temperature, brake conditioning, outside temperature, and past driving behavior that may have affected the brake system. Unlike other vehicles, Tesla is uniquely positioned to address more corner cases over time through over-the-air software updates, and it continually does so to improve factors such as stopping distance."
Most people buy Tesla's to be cool, not to be practical.
Table-ized A.I.
CR doesn't accept manufacturer-provided samples for testing. They pose as a buyer and buy the product just as a regular customer would. This includes cars. So the car they test in their review is a true random sample. If Tesla is getting 133 ft stopping distances in their internal testing, while CR got a 152 ft stopping distance, that would suggest a QA problem at Tesla is resulting in large variability in the effectiveness of the brakes. Which given all the problems they've had with their Model 3 production wouldn't be that surprising.
Unlike other vehicles, Tesla is uniquely positioned to address more corner cases over time through over-the-air software updates, and it continually does so to improve factors such as stopping distance."
Eyeroll. I'm sure you'll be able to make major changes to stopping distance via a software update.
I see another flaw right there, but this one is not Tesla's fault.
#DeleteFacebook
Teslas probably use some combination of regenerative braking and traditional friction brakes with brake pads. This smells like the automated system isn't aggressive enough in engaging the friction brakes when the pedal is hit hard -- they probably prioritize using the brakes to recharge the batteries and not wearing out the brake pads. Maybe the software needs to be rewritten to prioritize friction braking when the pedal is pressed "suddenly."
As far as the giant LCD, it's abominable. It intrudes into the passenger and driver seat spaces and is likely easily broken due to its design. I've often put furniture or even lumber into a car's front passenger seat -- in the Tesla, this would virtually guarantee damage to the screen. It's also not tactile and hard to use with gloves on in winter.
The 2018 Leaf has a much more practical interior, even if it's not artsy-fartsy minimalist.
The location of almost all of Tesla's controls on a touchscreen
I want controls you can adjust without looking, and with gloves in the winter. Why is every car getting away from usability? It is a horrible trend.
Also if the brakes are simply under sized, how is that fixed with a firmware update?
Plus which, both Ford and Toyota make plug-in hybrids with msrp around $32,000 that look to be far more practical vehicles for folks that want an EV for local driving, but would like to take the occasional long trip without spending hours hanging out in parking areas in the middle of nowhere recharging their batteries.
You can't see ANYTHING from a car, You've got to get out of the goddamned contraption and walk...Edward Abbey
Hydrogen? Really? You know, we've been there, done that. We had hydrogen powered cars driving around in the late '70's and '80's - gov research programs after that little oil embargo dust up. We even had cryogenic liquid fuel tanks that could keep most of the fuel from evaporating away for weeks at a time, and when a little did evaporate away it went through a nickel catalyst and was converted to harmless water.
Don't even think about compressed gas storage or porous adsorption techniques. The volumetric efficiency of the cryogenic liquid is bad enough. Compressed gases and adsorption storage in a typical vehicle might rival the range of a bicycle day trip. Maybe.
A minor change in metallurgy was required to keep turbo charger vanes from failing due to hydrogen embrittlement. Any internal combustion engine can be converted (hint - change your ignition timing to about ZERO degrees before tdc, and reduce or eliminate the vacuum/throttle advance. Hydrogen burns so much faster than traditional hydrocarbons that any timing advance will result in a broken crank). They burn cleaner, last longer, and don't need oil, right? And fuel cells are even better, right?!
Wrong!
Without truly massive investments in nuclear or other power plants to make hydrogen, and an equal investment in all new distribution systems for hydrogen, hydrogen is otherwise made by reforming natural gas and coal flue gas. Yeah, let's do that!
Except lots of studies and research has shown that converting a hyrdrocarbon to hydrogen, then pumping and shipping it around, is far less efficient and far more polluting than just charging batteries. Fuel cells don't change this reality. Also, how come we don't see fuel cell power plants? Hmm, that's curious!
Hydrogen is an Exon Mobile unicorn. Oil companies _love_ the prospect of a "hydrogen" economy.
I know, hydrogen is the fuel of choice for the Tesla haters. It's sad, really. I want you to have your unicorn, I really do, so here you go:
http://pbfcomics.com/comics/th...