BMW has always been in the top of the automobile market by launching various cars. It first introduced BMW i8 as the BMW Concept Vision Efficient Dynamics. BMW i8 is a plug-in hybrid developed by BMW. In the year 2015 BMW i8 has introduced a 7.1 kWh lithium-ion battery pack that is comprised of an all-electric range of 37 km (23 mi) under the New European Driving Cycle (NEDC). This version of the car has a fuel efficiency of about 2.1 L/100 km (134.5 mpg-imp; 112.0 mpg-US) with carbon emissions of 49 g/km.
|Class||Sports Car GT|
|Body Style||2-door coupe|
|Engine||1.5 L turbocharged I3 gasoline|
|Length||4,700 mm (190 in)|
|Width||1,940 mm (76 in)|
|Height||1,300 mm (51 in)|
|Car Weight (empty)||1,485 kg (3,274 lb)|
|Top Speed||155 mph|
|0-60 mph||4.5 sec|
The i8 plug-in hybrid BMW’s interior seats four in trappings worthy of five star hotel. A turbocharged three-cylinder engine/electric motor duo with a combined 357 hp gives high acceleration, a 155-mph top speed, and a great efficiency. Handling and steering is precise; braking is best for any car.
The BMW i8 has risen to revolutionizes its class. It is the first sports car with less fuel consumption and has the emission values of an average compact car. The asset of the plug-in hybrid lies in the perfect synchronization of electric motor and engine, which makes BMW i8 the best car with efficiency and great dynamics on the road. The first sports car with fuel efficient technology.
According to the company the i8 represents ‘a new era of sustainable performance’, although whether buyers of six-figure sports cars really look forward for fuel efficiency and sustainability is open to question. BMW i8 is light weight, and using of innovative materials should make it a buzz in the field of technology, but unless we drive it, the question will arise in our mind whether it has the performance of a $136,000 car.
The BMW i8 is a two-seat sport car with gull doors; its body shell is made of carbon-fiber reinforced plastic (CFRP) which rides on an aluminium chassis that absorbs frontal crash energy not just one but two powertrains.
The performance of BMW i8 is very smooth and splendid. When you press the start button, the car automatically goes into its default Comfort mode. If battery is fully charged, the car will start using the electric power, which is provided by a 129-hp motor powering the front wheels. It uses power from a 6.0-kWh lithium-ion battery that’s located in the central tunnel within an aluminium structure. In this mode, the car is very smooth and comfortable, and it’s quiet and sprightly enough to keep up with normal traffic—In shorter words, it feels about as quick as a Flash.
Press the accelerator a little farther, and the transverse, mid-mounted turbo three-cylinder bursts to life with a growl. The 3300-pound BMW i8 moves out smartly. BMW also claims a 0-to-60 mph time of fewer than 4.5 seconds, the i8 feels every bit as quick as that, and we are expecting the time of 4.3 seconds.
You don’t need to do any shifting, as the i8 is equipped with two automatic transmissions. There is a two-speed gearbox for the electric motor to provide a good amount of thrust in electric-only mode, which tops out at 75 mph. At higher speeds, the gas engine engages and the electric motor shifts into high gear to add to the performance up to the 155-mph top speed. The 1.5-liter three-cylinder is coupled to an Aisin six-speed automatic borrowed from the Mini line. It’s made up to cope with the more powerful engine and makes it hard for other cars to better match the i8’s need for efficiency and performance.
The operation of the electric motor’s transmission is unnoticeable, and the six-speed coupled to the gas engine shifts more smoothly than any other automatic. As you select the i8’s Sport mode, the steering and the suspension become firmer and both powertrains add up to maximize performance. The driving thrust shifts from front- to rear- to all-wheel drive as needed to improve cornering agility.
In addition to the three driving modes–All-Electric, Comfort, and Sport–the first two can be driven using the EcoPro function, which increases the efficiency and range of the car by capping acceleration and other energy uses
One problem with many electric vehicles is inconsistent brake feel due to the blending of regenerative and friction braking. But in i8, you get about 40 percent of the regenerative braking by simply lifting off the accelerator. The rest comes in the first part of brake-pedal travel, which is a little soft before firming when the friction brakes are applied. It’s not perfectly smooth, but it is better than many sports cars.
New R8 is packed with updated 4.2 FSI V8 engine that deliver a total 430 HP at 7,900 rpm and 317.15 lb-ft of torque and the new updates in 7-speed S tronic transmission helps in minimal delay between gear changes.
Mercedes SLS AMG GT
The new Mercedes SLS AMG GT comes with naturally aspirated 6.2-liter M159 V-8 engine that will produce 622 horsepower at 6800 rpm and produces 479 lb-ft of torque at 4750. SLS AGM GT will catch 0-60 mph in 3.5 sec and 200 mph as top speed of 2015 SLS AGM GT
The i8 packs a tremendous amount of technology and performance into its compact size. Not only it employs expensive materials for weight saving, but the electric powertrain pieces are also not less, and so is the BMW i8’s unique platform. Among the features offered on BMW i8 cars in some markets are the world’s first laser headlights–where they’re legally permitted–with LED headlights fitted elsewhere.
Through its overall concept, the BMW i8 embodies the accomplished vision of a modern and sustainable sports car. The highly emotive design instantly shows which qualities the BMW i8 will offer. Yet is doesn’t rely entirely only on its sports car character but it aesthetics also pursue functional aims: more aerodynamics for maximum efficiency.
Excited to buy this sport coupe, you will have to wait a little and also pricing won’t be announced any earlier than the debut of the production version, but we can’t expect a number less than $135,000, that too for the base car, when it goes on sale next spring.
So, from a pure performance-per-dollar perspective, the i8 won’t be able to touch a C7 Corvette Stingray or even a Porsche 911 but will look more exotic than either, it will sport more technology than both put together, and if anyone spending $100,000 plus he won’t be disappointed by spending them on BMW i8 as it will be more fuel efficient.