BMW presents one of the vital necessary fashions within the model’s historical past. The five-door i4 hatchback is an instance of the way forward for the model. It’s nothing lower than a take a look at: Can the long-lasting Three Sequence, the core of driving pleasure, additionally operate as an electrical automobile?
Two efficiency ranges
The i4 is a bit more large than the present 3-series sedan. It’s Eight cm longer and likewise barely wider and better than crucial BMW of the previous world. A load quantity of 470 to 1290 liters suits beneath the massive, electrically operated tailgate. The primary electrical BMW sedan will initially include two engines: the i4 eDrive40 with an output of 250 kW and rear-wheel drive and the i4 M50 with 400 kW and all-wheel drive. All technical information are solely provisional because the homologation continues to be pending.
The i4 M50 is the primary electrical automobile that M GmbH helped develop. As an “M-Efficiency” mannequin, the brand new i4 is far nearer to the usual BMW from the meeting line than the M3 developed totally by M GmbH. However, it ought to present how BMW will even electrify the quickest letter on the earth sooner or later. To date, that is the apparently final refuge of a supposedly petrol-consuming lateral dynamics sect.
Driving efficiency and vary
The preliminary information are promising. The tamer eDrive40 ought to allow a spread of 590 km within the WLTP (M50: as much as 510 km). The weaker mannequin is restricted to a high velocity of 190 km / h, the M50 can run 225 km / h. The usual acceleration to 100 km / h provides BMW 5.7 or 3.9 seconds.
BMW leaves little question that one a Tesla Model 3 possibly nonetheless pulling on the straight. In curves, nevertheless, the i4 ought to present that lateral dynamics had been invented within the previous world. The extraordinarily flat batteries, that are built-in deep into the automobile flooring and are 110 mm excessive, lead to a automobile heart of gravity that’s 53 mm decrease than that of a 3-seater sedan. At first look, that does not seem to be a lot, but it surely ought to have a optimistic impact on driving habits. And that, though the present Three Sequence shouldn’t be a toddler of unhappiness.
A BMW-typical balanced weight distribution between the entrance and rear axles in addition to a chassis with five-link rear axle and stroke-dependent shock absorbers are good kind in a performance-oriented BMW past the cheaper front-wheel drive fashions. Technical tips similar to a normal actuator-related wheel slip limitation, within the case of the M50 mixed for the primary time with an electrical all-wheel drive, must be vital to cover the load penalty of the i4.
Virtually half a ton heavier than an M340i
The i4 eDrive40 is round 200 kg and, based on the preliminary information sheet, even 470 kg heavier than an M340i sedan with a six-cylinder petrol engine, eight-speed computerized transmission and all-wheel drive. In response to the producer, a Tesla Mannequin Three Efficiency with electrical all-wheel drive is over 360 kg lighter than an i4 M50. Engineering is required to get a lateral dynamics champion on the highway.
The battery and charging expertise of the i4 must also be state-of-the-art. The vitality content material of the lithium-ion batteries is 83.9 gross, 80.7 internet kWh. The electrical sports activities sedan has to do with out an 800-volt electrical system. Nevertheless, BMW guarantees a direct present charging capability (DC) of as much as 200 kW. That must be sufficient to refill a spread of 164 km (eDrive40) or 140 km (M50) in ten minutes – primarily based on a SoC of 10 %.
A 3-phase charger is a part of the usual tools. In response to the preliminary data, charging from zero to 100 % on a wallbox with alternating present (AC) ought to take round 8.5 hours. On the DC quick charging station, the i4 ought to be capable to cost from 10 to 80 % in round 31 minutes. The usual warmth pump and an built-in heating and cooling system with predictive warmth administration networked, for instance, by way of the navigation system and on-board sensors, ought to each save electrical energy and create the thermal stipulations for sustained excessive charging capability.
BMW provisionally signifies an influence consumption within the WLTP of 16 to 20 kWh / 100 km for the i4 eDrive40 and 19 to 24 kWh / 100 km for the i4 M50. For comparability: With the Tesla Mannequin Three with the very best efficiency on the time, colleague Christoph 2019 had an actual take a look at consumption of 22.9 kWh / 100 km. The Tesla can clearly present its weight benefit by way of effectivity.