Lably
Skip to content

BMW i8

Plug-in hybrid sports car developed by BMW

  • 15 min read
  • 6 chapters
2016 BMW i8 Taken in Leamington Spa
Vauxford · CC BY-SA 4.0

Related on Lably

Through Kilowatt-hour, Acceleration and Electric motor

The 2015 i8 could accelerate from 0 to 100 km/h (62 mph) in 4.4 seconds and had an electronically limited top speed of 250 km/h (155 mph). The 2015 model year i8 had a 7.1-kWh lithium-ion battery pack that delivered an all-electric range of 37 km (23 mi) under the New European Driving Cycle. Under the U.S. EPA cycle, the range in EV mode was 24 km (15 mi). The battery capacity of both the BMW i8 Roadster and the i8 Coupe was increased to 11.6 kWh in 2018, allowing the NEDC electric range to rise to 55 km (34 mi) for the coupé and 53 km (33 mi) for the roadster.

The i8 coupé had a fuel efficiency of 2.1 L/100 km (134.5 mpg‑imp; 112.0 mpg‑US) under the NEDC test with carbon emissions of 49 g/km. The EPA rated the i8 combined fuel economy at 76 MPGe (2.1 L gasoline-equivalent/100 km; 91 mpg-imp gasoline-equivalent) and 29 miles per gallon (6.7L/100 km) when running in pure gasoline mode.

History

Previewed by the Vision EfficientDynamics concept car, the i8 was part of BMW's "Project i" and was marketed as a new brand, BMW i, sold separately from BMW or Mini. The BMW i3, launched for customers in Europe in the fourth quarter of 2013, was the first model of the i brand available in the market, and it was followed by the i8, released in Germany in June 2014 as a 2015 model year. Other i models were expected to follow.

The turbodiesel concept car was unveiled at the 2009 International Motor Show Germany, In 2010, BMW announced the mass production of the Vision EfficientDynamics concept in Leipzig beginning in 2013 as the BMW i8. The BMW i8 gasoline-powered concept car destined for production was unveiled at the 2011 Frankfurt Motor Show. The production version of the BMW i8 was unveiled at the 2013 International Motor Show Germany. The following are the concept and pre-production models developed by BMW that preceded the production version. When BMW i sponsored the ABB FIA Formula E World Championship, they announced that they would provide support vehicles; the i8 operated as the official safety car.

BMW Vision EfficientDynamics (2009)

The BMW Vision EfficientDynamics was a plug-in hybrid concept car with a 1.5L three-cylinder turbo-diesel engine. Additionally, there were two electric motors with 104 kW (139 hp). It allowed for acceleration from 0 to 100 km/h (62 mph) in 4.8 seconds, with an electronically limited top speed of 250 km/h (155 mph).

According to BMW, the average fuel consumption in the EU test cycle (KV01) was 3.76 L/100 km (75.1 mpg‑imp), with a carbon dioxide emission rating of 99 grams per kilometer (1,3 L/100 km and 33g CO2/kabelham; EU-PHEV ECE-R101). The estimated all-electric range was 50 km (31 mi), and the 24-liter petrol tank extended the total vehicle range to up to 700 km (430 mi). The lightweight chassis was made mainly from aluminum. The windshield, top, doors, and fenders were made from polycarbonate glass, with the body having a drag coefficient of 0.22.

The designers of the BMW Vision EfficientDynamics concept were Mario Majdandzic for the exterior and Jochen Paesen (lead interior design), Markus Speck (interior design), and Felix Staudacher former Baerlin (detail design) for the interior. While Jochen Paesen took care of the main interior theme, Markus Speck was in charge of the seats, all the visible structure, and some details. Felix Baerlin supported Jochen Paesen on details including the steering wheel and center console.

The vehicle was unveiled at the 2009 International Motor Show Germany, followed by Auto China 2010.

BMW i8 Concept (2011)

The BMW i8 Concept plug-in hybrid electric vehicle included an electric motor located in the front axle powering the front wheels rated at 96 kW (131 PS; 129 hp) and 250 N⋅m (184 ft⋅lb), a turbocharged 1.5-liter 3-cylinder gasoline engine driving rear wheels rated at 164 kW (223 PS; 220 hp) and 300 N⋅m (221 ft⋅lb) of torque, with a combined output of 260 kW (354 PS; 349 hp) and 550 N⋅m (406 ft⋅lb), a 7.2 kWh (26 MJ) lithium-ion battery pack that allowed an all-electric range of 35 km (22 mi). All four wheels provided regenerative braking. The location of the battery pack in the energy tunnel gave the vehicle a low centre of gravity, enhancing its dynamics. Its top speed was electronically limited to 250 km/h (155 mph) and was expected to go from 0 to 100 km/h (0 to 60 mph) in 4.6 seconds. Under normal driving conditions the i8 was expected to deliver 80 mpg‑US (2.9 L/100 km; 96 mpg‑imp) under the European cycle. A full charge of the battery would take less than two hours at 220 V. The positioning of the motor and engine over the axles resulted in 50/50 weight distribution.

The vehicle was unveiled at the 2011 International Motor Show Germany, followed by CENTER 548 in New York City, 42nd Tokyo Motor Show 2011, 82nd Geneva Motor Show 2012, BMW i Born Electric Tour at the Palazzo Delle Esposizioni at Via Nazionale 194 in Rome, and Auto Shanghai 2013.

This concept car was featured in the film Mission: Impossible – Ghost Protocol.

BMW i8 Concept Spyder (2012)

The BMW i8 Concept Spyder included a slightly shorter wheelbase and overall length compared to the BMW i8 Concept, carbon-fiber-reinforced plastic (CFRP) Life module, drive modules made primarily from aluminum components, interlocking of surfaces and lines, 8.8-inch (220 mm) screen display, off-white outer layer, and orange-toned naturally tanned leather upholstery.

The vehicle was unveiled at Auto China 2012 in Beijing where it won Concept Car of the Year, followed by the 83rd Geneva International Motor Show 2013. The designer of the BMW i8 Concept Spyder was Richard Kim.

BMW i8 coupe prototype (2013)

The design of the BMW i8 coupe prototype was based on the BMW i8 Concept. The BMW i8 prototype had an average fuel efficiency of less than 2.5 L/100 km (113.0 mpg‑imp; 94.1 mpg‑US) under the New European Driving Cycle with carbon emissions of less than 59 g/km. The i8 with its carbon-fibre-reinforced plastic (CFRP) passenger cell, lightweight, aerodynamically optimized body, and BMW eDrive technology offered an expected 0–100 km/h (0–62 mph) sprint time of less than 4.5 seconds using both power sources. The plug-in hybrid system of the BMW i8 comprised a three-cylinder, 1.5-liter BMW TwinPower Turbo gasoline engine combined with BMW eDrive technology used in the BMW i3 and developed maximum power of 170 kW (228 hp). The BMW i8 was the first BMW production model to be powered by a three-cylinder gasoline engine and the resulting specific output of 115 kW (154 hp) per liter of displacement was the highest of any engine produced by the BMW Group.

The BMW i8's second power source was a hybrid synchronous electric motor specially developed and produced by the BMW Group for BMW i. The electric motor developed a maximum power of 98 kW (131 hp) and produced its maximum torque of around 320 N⋅m (236 lbf⋅ft) from a standstill. As well as providing a power boost to assist the gasoline engine during acceleration, the electric motor could also power the vehicle by itself. Top speed in electric mode was approximately 120 km/h (75 mph), with a maximum driving range of up to 35 km (22 mi). The model-specific version of the high-voltage 7.2 lithium-ion battery had a liquid cooling system.

The vehicle was unveiled in BMW Group's Miramas test track in France.

Sign in to keep reading

5 more chapters are free with a Lably account.

More in Environment