The Roadster's efficiency is reported as 133 Wh/km (214 Wh/Mile)[2] or equivalent to 135 mpg (1.74 l/100 km).
Fuel efficiency
For more details from the manufacturer, see their white papers and presentation
On the EPA highway cycle, the Roadster's efficiency is "135 mpg equivalent, per the conversion rate used by the EPA"[2] which converts to 133 Wh/km (4.66 mi/kWh) battery-to-wheel or 155 Wh/km (4.00 mi/kWh) station-to-wheel.
Tesla also reported the battery-to-wheel efficiency as 110 Wh/km (5.65 mi/kWh) on an unspecified driving cycle (either a constant 60 mph (96 km/h) or SAE J1634 test[20]) and states a charging efficiency of 86%. This results in an overall station-to-wheel efficiency of 128 Wh/km (4.85 mi/kWh).[21]
The Roadster's motor efficiency is 90% on average and 80% at peak power.[22] For comparison, an internal combustion engine produces 6000 to 9000 Wh of output energy from each gallon of gasoline input[citation needed]. The state of tune and seasonal variations in gasoline formulation account for the output range.
Because the Roadster does not actually use gasoline, equivalent petroleum fuel efficiency (mpg, l/100 km) can be calculated in several ways:
* A number comparable to the typical Monroney stickers' "station-to-wheel" fuel efficiency can be calculated based on the DOE's energy content for a U.S. gallon of gasoline of 33705 Wh/gal
* For CAFE regulatory purposes, the DOE's full petroleum-equivalency equation[23] combines primary energy efficiencies for the USA electric grid and the crude oil to gas station path with a "fuel content factor" to quantify conservation and scarcity of fuels in the USA. This combination yields a factor of 82,049 Wh/gal in the above equation and a regulatory fuel efficiency of 329 mpg (0.72 l/100 km).
* To compare the full-cycle energy-equivalency of gasoline with electricity from the USA grid, the factor of 12,307 Wh/gal[23] removes the "fuel content factor" = 1/0.15 and the above equation yields an equivalent efficiency of 49 mpg (4.77 l/100 km). For full-cycle comparisons, the "station-to-wheel" sticker value from a gasoline-fueled vehicle must be multiplied by the "well-to-station" efficiency; the DOE regulation specifies a "well-to-station" efficiency of 0.83 for gasoline.[23] The average American car's 28 mpg, for example, converts to a full-cycle energy-equivalent of 23.2 mpg.
* To compare the full-cycle energy-equivalency of gasoline with electricity generated by newer, 58% efficiency CCGT power plants,[24] the factor of 21,763 Wh/gal[23] in the above equation yields a fuel efficiency of 87 mpg (2.70 l/100 km).
* When recharged using non-fossil fuel electricity sources such as hydroelectric, solar power, wind or nuclear, the equivalent efficiency can be remarkably higher as fossil fuel is not used in refueling.
* Monetary cost offers another way to find an equivalent fuel efficiency. Tesla Motors reports an energy cost of approximately $0.01/mile using PG&E's E-9 night-time incentive charging, or about $0.03/mile using the retail price of $0.12/kWh. Comparison with a gasoline price of $3.00/gallon, for instance, results in an equivalent of 300 mpg (0.78 l/100 km) using E-9 or 100 mpg (2.35 l/100 km) using retail pricing. For more cost comparison details, please refer to the battery electric vehicle article.
"hány évig bírja?"
100000 miles or 5 year ~160 000 km
"és mennyibe kerül egy feltöltés?"
3 és fél óra alatt óránként 110 Watt körül.
Számold ki... de annyit azért hozzáfûznék, hogy a nagyképernyõs Samsung TV-nk minden este legalább 4 órát megy és 135 W-ot fogyaszt, havonta 8000-9000 Ft villanyszámlát adok fel, de ebben villanytûzhely, mikró, még pár tv, számítógép, mosógép stb is benne van.