Tesla Says Its Model 3 Car Will Go On Sale On Friday (apnews.com)

Electric car maker Tesla says its keenly awaited Model 3 car for the masses will go on sale on Friday. From a AP report: CEO Elon Musk made the announcement Monday on Twitter. The car is to start around $35,000 and with a $7,500 federal electric car tax credit, could cost $27,500. Tesla says the five-seat car will be able to go 133 miles (215 kilometers) on a single charge and will be sporty, accelerating from zero to 60 miles per hour in under six seconds. Editor's note: the article was updated after the Associated Press, the original source, updated its report.

Comments

Re:Wrong conversion to International System of Uni

[Lord_Byron]

Nah, whoever did the conversion messed up the operation (divide/multiply). Per Tesla's site, the range is 215 miles.

Re: Most people need something better

[Rei]

Keep in mind that the 215 mile range is under good conditions - new batteries, temperate climate, good roads with little traffic. A windy road during real winter will see nowhere near this range, nor will a car with some mileage on the batteries.

Partially true, partially not.

1) Battery age: This is correct. Battery range declines with time. Tesla warranties their packs for 75% of the initial range, for 8 years and unlimited km.

2) Temperate climate: This is mostly correct - but it can go either way. Tesla's range calculator shows, for example, that the P75D (EPA range 259mi) at 65mph does:
0F, heat on: 211mi
32F, heat on: 233mi
50F, heat on: 253mi
50F, heat off: 267mi
70F, AC off: 275mi
90F, AC off: 279mi
90F, AC on: 260mi
110F, AC on: 246mi

3) Traffic: It depends entirely on the type of traffic. While gasoline vehicles perform best at the lowest speed they can manage in their highest gear, EV optimum speeds are far lower, often in the ballpark of 20 mph, where their ranges can exceed their EPA ranges several times over. For example, the above P75D (EPA range 259mi) has the following speed-range depenency (70, no heat/AC)

Sub-45 mph: Not included in the calculator
45mph: 404mi
50mph: 367mi
55mph: 334mi
60mph: 303mi
65mph: 275mi
70mph: 250mi
Over 70mph: Not included in the calculator

Steady-moving traffic that simply slows down travel speeds actually increases EV range, potentially significantly. However, braking in traffic that strongly fluctuates between speeds wastes energy - Li-ion EV regenerative braking is generally 50-75% efficient round-trip (hybrids, with their small NiMH packs, generally are much less efficient round-trip, around 30%). In general, low speeds advantages win out over braking disadvantages, which is why EVs generally do much better in city driving than highway driving - the opposite of gasoline vehicles.

A key detail most people miss over when talking about traffic: does anyone realize how long of a drive you're talking about when you describe using up an entire EV's range in stop-and-go traffic? Say you're talking about an average speed of 15mph for an EV that would have 200 miles range in that conditions. You're talking about spending over thirteen hours in traffic in those conditions. When was the last time you spent over thirteen hours continuously in traffic?