Compare BMW i8 Roadster vs BMW 8 Series G14 Convertible vs Lexus LC 500 Convertible
Variants
Euro 6
Euro 6d
840d MHEV xDrive
840d xDrive
840i
840i Euro6d
840i Euro6d xDrive
840i xDrive
M850i Euro6d xDrive
M850i xDrive
Capacity
Cargo Capacity
88 L / 3.1 cu-ft
96 L / 3.4 cu-ft
Coolant Capacity
9.5 L / 10.0 qt
Engine Oil Capacity
4.2 L / 4.5 qt
Fuel Capacity
30.0 L / 7.9 gal
82.0 L / 21.7 gal
Interior Space
Headroom: 932.8 (front) / 814.6 (rear) mm | Hip Room: 1377.4 (front) / 1089.6 (rear) mm | Legroom: 1081.3 (front) / 712.2 (rear) mm | Shoulder Room: 1438.6 (front) / 1172.4 (rear) mm
Passengers
2
4
4
Payload
435 kg / 959 lbs
Chassis
Brakes | Front
Ventilated discs
Ventilated discs
Ventilated discs, 398.78 mm
Brakes | Rear
Ventilated discs
Ventilated discs
Ventilated discs, 358.14 mm
Power Steering
Electric Steering
Electric Steering
Electric Steering
Suspension | Front
Double-wishbone
Double-wishbone
Multi-link
Suspension | Rear
Multi-link
Multi-link
Multi-link
Tire Size
Front wheel tires: 195/50 R20 Rear wheel tires: 215/45 R20
Front wheel tires: 245/45 RF20, 245/40 RF21 Rear wheel tires: 275/40 RF20, 275/35 RF21
Turning Circle
12.3 m / 40.3 ft
11.9 m
10.8 m / 35.4 ft
Weight Distribution
52.5% (front) / 47.5% (rear)
Construction
Battery | Capacity
11.6 kWh (gross) | 9.4 kWh (net)
Battery | Type
Lithium-ion
Battery | Voltage
355.0 V
Body Style
2-door plug-in hybrid Convertible
2-door Convertible
Dimensions
Ground Clearance
131 mm / 5.2 in
Size | Height
1350 mm / 53.1 in
Size | Length
4689 mm / 184.6 in
4760 mm / 187.4 in
Size | Width
1942 mm / 76.5 in | 2218 mm / 87.3 in (mirror unfolded)
1920 mm / 75.6 in
Track Width | Front
1644.0 mm / 64.7 in
1630.0 mm / 64.2 in
Track Width | Rear
1721.0 mm / 67.8 in
1642.0 mm / 64.6 in
1635.0 mm / 64.4 in
Weight
1595.0 kg / 3516.4 lbs
2040.0 kg / 4497.4 lbs
Wheel Size
Front wheel rims: 7J x 20 Rear wheel rims: 7.5J x 20
Front wheel rims: 20, 21 Rear wheel rims: 20, 21 in
Wheelbase
2800 mm / 110.2 in
2822 mm / 111.1 in
2870 mm / 113.0 in
Performance
Acceleration | 0 - 100 km/h
4.6 sec
Acceleration | 0 - 60 mph
4.4 sec
4.6 sec
CO2 Emission
46 g/km
Coefficient Of Drag
0.28
0.33 ~ 0.34
Electric Range
53.0 km / 32.9 mi
Fuel Economy
2.0 L/100km / 117.6 MPG (combined)
13.1 L/100km / 18.0 MPG (combined) | 15.7 L/100km / 15.0 MPG (urban) | 9.4 L/100km / 25.0 MPG (highway)
Misc
Roof Operation Time: 15 sec (open) / 16 sec (close)
Top Speed
250.0 km/h / 155.3 mph, 120.0 km/h / 74.6 mph (EV mode)
250.0 km/h / 155.3 mph
270.0 km/h / 167.8 mph
Powertrain
Drivetrain Layout
Rear-engine (transverse), All-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
LEV III-ULEV 70
Engine
B38K15T0
2UR-GSE
Engine | Bore
82.0 mm / 3.2 in
94.0 mm / 3.7 in
Engine | Compression Ratio
9.5:1
12.3:1
Engine | Displacement
1.5 L / 91.5 cu-in / 1499.0 cc
5.0 L / 303.2 cu-in / 4969.0 cc
Engine | Power
477.0 hp / 355.7 kW @ 7100 rpm
Engine | Specific Output
154.1 hp/L / 2.5 hp/cu-in
96.0 hp/L / 1.6 hp/cu-in
Engine | Stroke
94.6 mm / 3.7 in
89.5 mm / 3.5 in
Engine | Torque
320 Nm / 236.0 lb-ft @ 3700 rpm + 250 Nm / 184.4 lb-ft
540 Nm / 398.3 lb-ft @ 4800 rpm
Engine | Type
Twin-scroll turbocharged direct-injected petrol inline-3 engine with 4 values per cylinder
Naturally-aspirated direct- and multi-port-injected petrol V8 DOHC engine with 4 values per cylinder
Final Drive
2.937x TORSEN Limited Slip
Fuel Capacity
21.7 gal / 82 L
Transmission | Gears
6-speed
8-speed
10-speed
Transmission | Type
Automatic
Automatic Steptronic
Automatic Sport Direct Shift
Production
Availability
2020
Debut
2018-11
2019-11 LA Auto Show
Made In
Germany
Reviews
Neofiliac score
37%
85%
98%
Pros
- Supercar-like styling
- Warms the heart of snowflakes
- Good 0.28 drag coefficient
- Rather good styling
- Luxurious interior
- Decent performanceGood 0.28 drag coefficient
- Good suspension setup
- Modern yet elegant styling
- Wonderful V8 engine
- Smooth drivetrain
- Luxury appointments
- High standard equipment
- Good pricing
- High reliability
Cons
- Tiny, lethargic engine
- Poor performance
- Complex and unreliable
- Impractical
- Diesel in a luxury convertible?
- Only soft top
- Poor reliability
- Obsession with AWD
- Very high fuel consumption
- Very little cargo space
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