’15 BMW i8 on sale in August in U.S.
On-Road Performance Mixed
Spirited driving along the Pacific Coast Highway by a cabin mate quickly saps our test car’s 13 miles (21 km) of electric range, fewer than the stated European-test-cycle maximum of 22 miles (35 km). Air conditioning, needed on a characteristically warm, sunny Southern California day, doesn’t help matters.
During WardsAuto’s first turn behind the wheel, we are solely on engine power, minus any trickle charge provided by regenerative braking.
At the end of 25 miles (40 km) of driving at speeds about 50 mph (80 km/h), we achieve 27.8 mpg (8.5 L/100 km). That’s outstanding for a large, powerful sports car, but not out of the realm of possibility with non-electrified competitors.
The ’14 Chevrolet Corvette Stingray coupe has an EPA-estimated 28 mpg (8.4 L/100 km) highway rating when its 455-hp 6.2L V-8 is matched to a 6-speed automatic transmission.
In a second i8, driven in heavy traffic after lunch with plentiful braking, range grows from 14 to 17 miles (23 to 27 km), and we achieve an average 71.9 mpg (3.3 L/100 km). Much better.
Still, it will be the rare buyer who has a daily driving route of less than 22 miles, or has access to a charger they can use during the workday. However, if a charger is available it takes a scant 1-½ hours to fill the pack on a 240V line.
Getting in and out of the i8 is a carefully choreographed endeavor and calls into question’s target audience of 40- and 50-year-olds. Entry, by sitting on the wide, high sill, then shimmying down into the seat, is easier than exiting, which requires boosting oneself over the sill from a sunken seating position.
We won’t even get into what it takes to get in and out of the tiny backseat.
The i8’s interior is sedate and doesn’t mirror the dramatic exterior, save for turquoise seatbelts. But controls are in easy reach, and simulated gauges on the screen behind the steering wheel transmit lots of data and they coolly change from blue to red when the car is switched into sport mode.
Sport is one of two possible transmission modes. “D” is automatic shifting while Sport, essentially “engine on,” allows for manual shifting and quickens acceleration and gear changes. Sport also provides a bigger power boost from the electric motor and more active regenerative braking.
There also are two drive settings, selectable via center-console buttons. Comfort is the default mode and blends motor and engine for optimal performance and fuel efficiency; Eco Plus is for those dedicated hypermilers who don’t mind a not-so-responsive accelerator and reduced AC output.
Still, we find off-the-line acceleration not shabby in Eco Plus. This car always is raring to go thanks to the motor’s 184 lb.-ft. (250 Nm) of torque, which is just as present in higher gears as it is in low ones.
We avoid wide-open throttle in Eco Plus, which brings on the engine, as the car thinks you may be trying to avoid an emergency situation.
The i8’s disc brakes are a tad grabby, especially creeping along in PCH traffic, but we’ve experienced worse.
Steering is direct but transmits little road feel, especially when power is coming only through the front wheels.
Being a low-and-wide vehicle, the i8 has scant body roll and powers out of corners with all four tires firmly gripping the pavement. The car is front-wheel drive when on electric power but varies from rear-wheel to all-wheel drive otherwise.
Kudos tofor trying to redefine performance for less-gluttonous times, but for now the i8 is merely a novelty act, albeit an incredibly attractive one. It should get better in the future, as Li-ion technology improves and gives the car real electric range that won’t leave a buyer wanting.