How Do You Compare Different Electric Cars? Whine? Top Speed?

Brad Berman · Brad Berman · 1 year ago

Automobile magazine recently spent a day with the Ford Transit Connect Electric, and came away impressed with the all-electric small delivery fan. It’s interesting to see the electric light bulb flash over the head of one mainstream auto reviewer after the next. Each one approaches an electric vehicle expecting the wheels to fall off, but lo and behold, they’re blown away by its “realness.” Don Sherman writes:

"The electric systems are impressively well mannered, performance is commendable, and there's sufficient range to support the intended mission…If there were doubts in your mind about the viability of electric propulsion, chalk up the Transit Connect Electric as one more piece of evidence in favor of the powertrain of the future."

I think we’re all trying to get a handle on the best way to review these cars—and to present the most useful points of comparison. The Automobile review of the Transit Connect featured two comparison criteria that could make sense—but only to some extent.

The first is “whine.” Sherman compares the Transit Connect to the Tesla Roadster. “You've heard about the silent smoothness of electrics but many of them—including Teslas—generate prodigious amounts of gear and electrical whine,” he writes. “The Transit Connect Electric, however, is as silent and civil as a gracious butler. This powertrain responds enthusiastically to a prod of the pedal with barely a murmur.”

The other is “top governed speed.” On this account, Automobile compares the gas-powered version’s top-speed of 90 mph, to the electric Transit Connect’s limit of 75 mph. He clarifies, “Sustained high speeds rapidly deplete any electric car's battery so they are naturally discouraged.” (FYI: the Chevy Volt has a top speed of 100 mph, while the Nissan LEAF manages 90 mph.)

I get the point about electric whine—too much of that is annoying—but the difference in top speed of 75 mph versus 90 mph in a delivery truck seems irrelevant. Is the extra 10 mph of capability a selling point for the Volt over the LEAF? I doubt it.

So, here we are at the dawn of a new age of electric automobiles trying to develop the right conversations—and the most useful vocabulary to hold those chats. Of course, driving range comes first and foremost. But what do you think we should be talking about when comparing the road manners of one plug-in car compared to another?

Comments

· TechExplorer · 1 year ago

The major concern does it perform the Task is was designed for,and @ the cheapest costs as compared to others.

· Dilbert (not verified) · 1 year ago

I vote we axe the word "whine" and use any of the below words. Only positive words should be used. I hope the term "motor whine" doesn't stick as the thing motor journalists use.

purr
hum
whir
note
tone

I think I would go with either motor "hum" or maybe "the motor note".

· ex-EV1 driver · 1 year ago

Dilbert,
While I appreciate your standing up for EVs: If you've ever heard the pleasant Whine of a Tesla Roadster as it's leaving a poor hapless Porsche behind, there really isn't any other word to describe it and there's no negative connotation while you're saying it.
It's kind of like the whine of a well tuned rice-burning tuner car or jet engine.
Personally, I figure EVs should be rated on the following:
EV specific issues:
1) Range per charge
2) Charging speed
3) Battery Warranty
Normal automobile metrics:
4) Acceleration (zero to 60 time)
5) Energy usage (Whr/mi or mi/kWhr)
6) Regenerative Braking aggressiveness/convenience
7) Top Speed (various tiers depending on whether it's advertised as a performance vehicle: normal passenger vehicles should go faster than 80 mph but above 90 mph is not worth comparing. Performance vehicles - no upper speed limit for comparisons - sometimes you've just got to prove a point >;-)
8) Top Sustained Speed (similar tiers as #6)
9) Handling
10) Spaciousness (headroom, # passengers, trunk space, etc)
11) Offroad capability-if applicable (ground clearance, approach and departure angles, differential slip control, electrical system sealing, suspension travel, etc)
12) Price
13) Service Interval (including time between brake pad replacement)

· TrasKY · 1 year ago

Task At Hand
From the end of the Automobile article "After spending part of a day behind the wheel of the TC Electric, we'd conclude that the Ford and Azure Dynamics collaboration is an unqualified success. The electric systems are impressively well mannered, performance is commendable, and there's sufficient range to support the intended mission. Reduced operating costs -- attributable to the cheaper fuel and no tune-ups or oil changes -- will help alleviate the financial sting of the high purchase price."

The only issue i have with the article is that in their test drive they purposely and admittedly used a driving mix that would be atypical for the intended market. I would think that they might have either chosen a different mix of highway and city/suburban driving or done an alternate test. Also, they should have run the car until it died rather than trusting the gauge.

· koxxy (not verified) · 1 year ago

Top speed used to be a good proxy for power + aerodynamics, but with EVs and "goverened" (artificially limited) top speeds, it is no longer an intuitive metric. ex-EV1 driver's list is certainly comprehensive, but if I had to narrow it down to just a few metrics, I would look at 0-60mph and 50-70mph acceleration, and range per hour of charge (at 240V, since that is what most of us will have in our garage).

On the sound issie, I agree with Dilbert that we need a more positive word than "whine". None of the suggested alternatives really capture the character of the "note" well enough though, so lets do what Americans have become quite good at: invent a word. I suggest "zumm" (combination of hum and zoom).

· ex-EV1 driver · 1 year ago

@ koxxy,
I would agree with the miles per hour of charge. For now, you're right about the 240 volts. As soon as fast charging gets implemented in vehicles and public stations deployed, that will become obsolete, however. All you'll care about for the 240 volt number is that the car is pretty full in about 6 hours of overnight charging. Much faster at 240 volts really won't really matter.

· koxxy (not verified) · 1 year ago

Good point, ex-EV1 driver. Home-charging overnight will not be the limiting factor, at least not in the long term. Also, I expect my charge time to be even shorter since my round-trip commute is only 20 miles, which means I will only have to top-off (or recharge on the weekend). This point seems to be lost in the discussion: all we ever talk about is max range and recharge from zero, whereas most real-world EV drivers would rarely dare cut it that close. The miles per hour of charge metric would let prospective buyers estimate charge time for their specific situation.

· Donovan Moser (not verified) · 1 year ago

For me, the key phrase is " drivetrain noise"
and a comparitor is how well the vehicle retains its usage complared to its fossil-fuel counterpart. the biggest turn off to EV potential buyers is just how much they have to give up to drive one..
remember the electric Ford Ranger? it was a two seat coupe. the cargo capicity was greatly reduced and trailering was horrendously low. thus, to drive the electric you gave up most of what made it a Ranger..
How well does the transit hold up as a utility van compared to the gas model?

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