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“Truth is in compare”


 

cars

2017 EV Competition Tesla Model 3 2018 Chevy Bolt 2017 BMW i3 + REX 2017
  Range [Mile] i 220/334 238 114+66=180
  Starting Price [$] 35,000/44,000 38,250 48,300
  Li-Ion Battery Pack [kWH] 50/75 60 33
  Electric motor AC Power [hp]=[kW] 258=192 200=150 170=125
  Acceleration to 60mph [sec] 5.6/5.1 6.5 6.6
  Overnight 2nd Level charging speed [mph] 29/35 30 25
  2nd Level AC Max Current [A] 32/40 32 32
  3rd Level DC Power [kW] 150 45 50
  3rd Level Charging Speed [Miles in 30 Min] 170 90 100
  Overnight AC 240V full charge [Hour] 6.5/7.7 8 4.5
  Fast DC charge time to 80% [Minut] 26/55 Supercharger 90 CCS 45 CCS
  Fuel Economy City/Hwy[MPGe] 131/120 128/110 137/111 w/o REX
  Driving from SF to NYC [Hour] i ~60-70 No CSS fast chargers (infrastructure) between east and west coast! more than 80 with “Start REX” button
  Front or Rear wheel drive [F]/[R] i R/{F+R} F R

Compare [EV] Electric Vehicles AKA Battery Electric Vehicles [BEV]
The Tesla car is the best EV in the World. The Tesla Model 3 is more affordable EV than other Tesla cars. A half million of Tesla M3 pre-ordered during 2016-2017 with $1000 deposit on tesla.com website and more than 100,000 orders have been made in Tesla Stores 03.31.16 before anybody sees the car! You can drive Tesla on any major highways, anywhere in the continental US by driving about 300 miles and charging less than an hour between drives because of widespread of Tesla Supercharges. It means only Tesla EV does not have a Range Anxiety while other EVs limited to drive locally and require planning ahead due absence of nationwide proprietary fast chargers network. Tesla M3 is capable to drive 310 miles on ‘any highway’ and be recharged to 80% during approximately 50-55 minutes. Unfortunately, all EV are commuters right now except the Tesla with the superior (every 100 miles) network of fast Supercharges in the US (and the World). Moreover, you may buy the self-driving car for the price under $50k! You can send it home and save on parking while you work downtown. It parks itself you do not need to pay for valet anymore and it is less aggressive than human in parking spot dispute.

BMW i3 is ‘Serial’ Hybrid Vehicle or PHEV (Plug-in Hybrid Electric Vehicle). It is only one PHEV for which California DMV issues HOV sticker! Serial Hybrid has the same efficiency as BEV because traction motor is ONLY electric engine while ICE (Internal Combustion Engine) produces electricity at constant (optimal) RPM. Electric engine has efficiency more than 90%. Parallel Hybrid (Prius or GM Volt) has twice less efficiency than BEV because ICE is traction engine too. ICE efficiency is range between 15% (heavy Hummer)-26% (Mazda RX.. with Wankel ICE), where is ICE Thermodynamic Theoretical limit is 45%! Proportional Efficiency unit could be a MPG (Mile Per Gallon), where is BEV has 100-150 MPGe (Mile Per Gallon equivalent) versus Parallel Hybrid (Prius) has 50 MPG.
There is another point why DMV does issue HOV sticker. Serial Hybrid has the same efficiency as BEV because traction motor is ONLY electric engine while ICE (Internal Combustion Engine) produces electricity at constant (optimal) RPM. Electric engine has efficiency more than 90%. Parallel Hybrid (Prius or GM Volt) has twice less efficiency than BEV because ICE is traction engine too. ICE efficiency is range between 15% (heavy Hummer)-26% (Mazda RX.. with Wankel ICE), where is ICE Thermodynamic Theoretical limit is 45%! Proportional Efficiency unit could be a MPG (Mile Per Gallon), where is BEV has 100-150 MPGe (Mile Per Gallon equivalent) vs Parallel Hybrid (Prius) has 50 MPG. There is another point why DMV does issue HOV sticker to BMW i3 and does not issue it to BMW i8, apparently, those have the same Serial Hybrid technology. In Europe, BMW i3 has Manual “Start REX” (Range EXtender) button that makes BMW i3 and i8 similar where is ICE may work entire trip. Some British drivers evidently (YouTube) has driven distance about 300 miles on a single charge and single tank on BMW i3 running ICE entire trip. US DOT banned the “Start REX” button and small ICE starts (on BMW i3) automatically when traction battery discharged below 20%. The ICE just charges battery after that, supporting the battery capacity between 20% and 10%. In this case power limited and BMW i3 can drive no more 45 mph indefinite distance (theoretically) by refueling small tank every 66 miles. The refueling and driving with discharged battery is NOT recommended by the manufacturer! BMW i8 can drive all trip with any highway speed vs US model of BMW i3 can drive with any highway speed (governed by 95 mph) only during a ~100 miles. The 100 miles would be a ~60 miles if BMV i3 drives 95 mph because energy spends on enormous resistance to air after 65 mph. The dramatic MPG decrease in high speed also happens with ICE car, but nobody cares because any exit has a gas station. The ban on “Start REX” button encourages US driver for a more clean drive and better fuel economy.

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