Porsche Boxster 987 E electric test car (2011)

Porsche Boxster E
© Porsche

Technical specification

Boxster E version Powered by Power Torque 62 mph/100 km/h Top speed
Rear-wheel-drive 1 motor 90 kW 199 lb-ft / 270 Nm 9.8 sec. 93 mph / 150 km/h
4-wheel-drive 2 motors 180 kW 397 lb-ft / 540 Nm 5.5 sec. 124 mph / 200 km/h

In July 2010 Porsche announced that it will be building three electric-powered Boxster test cars. “We will definitely be offering electric sports cars in the future,” said Michael Macht, the President and CEO of Porsche AG. “But such a concept only makes sense if it offers performance and a cruising range comparable to that of a sports car today.”

In February 2011 it was announced that road tests with the Boxster E test cars are starting. Two cars were equipped with electric motor on the rear axle, and one car with motors on both axles making it the first 4WD Boxster. Using Porsche's language, we could say it was a Boxster 4E. Power was provided from a 29 kWh battery pack and the NEDC range was 107 miles / 170 km. The 2-motor Boxster E accelerated to 62 mph/100 km/h in 5.5 seconds despite its ~1600 kg/3500 lb weight. As the car had no geabox (just fixed ratio gear), the top speed was limited to 124 mph/200 km/h. The maximum engine speed was ~12,000 rpm. Considering the electric motor provides maximum torque virtually from first crank and you can go to top speed thanks to high-rpm motors without changing the gear - the emotion is rather amazing. With two motors the efficiency is increased as more energy is recuperated during braking. As electric cars are quiet, Porsche engineers designed an Active Sound Design system.

Porsche Boxster E at Challenge Bibendum
© Porsche
Porsche Boxster E
© Porsche
Porsche Boxster E
The battery and power unit components are connected to two water cooling circuits. As with the internal combustion engine, the heat exchangers are located in the front spoiler. © Porsche
Porsche Boxster E front axle motor/drive
The front axle motor of the 4WD Boxster © Porsche
Porsche Boxster E battery pack
Each of the 440 cells has a nominal voltage of 3.3 V and an individual capacity of 20 Ah© Porsche
Porsche Boxster E battery
The weight of the battery pack is 341 kg/752 lb © Porsche
Porsche Boxster E layout
The battery's maximum power output is 240 kW, or 60 kilowatts more than the all-wheel Boxster E draws under full load© Porsche
Porsche Boxster E rear motor/drive
The battery’s energy content is 29 kWh of which for inherent physical reasons approximately 26 kWh are available for use © Porsche
Porsche Boxster E
© Porsche
Porsche Boxster E rear bumper
No exhaust pipe here! © Porsche
Porsche Boxster E at 2011 IAA Frankfurt Motor Show
At the 2011 IAA Frankfurt Motor Show © Porsche
Porsche Boxster E power socket
With the simple 3.3 kW charger it took 9 hours to charge the battery - this shows how difficult were the first days with electric cars. The charging time could be reduced using rapid charging.© Porsche
Porsche Boxster E dashboard
The push buttons in the steering wheel had an effect of a sort of an on-demand engine brake. The electrically powered air conditioning compressor was accommodated in the front luggage compartment.© Porsche
Porsche Boxster E instruments
In the place of the rev counter was a special E-Power meter. A swing to the right showed how much you pressed the accelerator pedal and a swing to the left showed the power recovery (when the accelerator pedal was released the electric motors started to act as generators).© Porsche
Porsche Boxster E display
Among its other functions, the instrument cluster’s right-hand TFT display acted as a range management system, displaying for example how much range could be gained by switching off the air conditioning system. With the first Porsche electric prototypes that was needed.photos © Porsche, Stuttcars compilation

Article © Stuttcars.com

Continue to Cayman e-volution
Feb, 01 – 46th birthday of the 934 (1976)
Feb, 03 – 38th birthday of the 962 (1984)
Mar, 01 – 6th birthday of the 982 (2016)
Mar, 02 – 12th birthday of the 958 (2010)
Mar, 03 – 7th birthday of the GT4 (2015)