AUTO Mercedes-Benz

Mercedes-Benz EQB UK FULL REVIEW -2022

Whether it’s for a large nuclear family or a small extended family: as a seven-seater, the new EQB offers space for many family configurations and a wide variety of transport needs. This gives it an exceptional position among compact electric cars. The two seats in the third row can be used by people up to 1.65 metres tall, and child seats can also be fitted there. The new EQB will launch in Europe and China at the end of the year, followed by the US market launch in 2022. After the EQA, it is already the second all-electric compact car from Mercedes-EQ. The powerful and efficient electric drive, clever recuperation and predictive Navigation with Electric Intelligence are just some of the features that link it to the EQA.

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The electric initiative from Mercedes-Benz Cars is accelerating as fast as the Mercedes-EQ models themselves: with the EQA, EQB, the electric business saloon EQE and the luxury saloon EQS, a total of four new models from Mercedes-EQ are being introduced in 2021, plus the Concept EQT as a harbinger of a new high level of quality in the small van segment. The Mercedes-Benz plug-in hybrid family, currently consisting of more than 20 model variants, is being renewed with electrified derivatives of the C-Class and the S-Class. For 2021, Mercedes-Benz Cars expects to increase the xEV share, i.e. of plug-in hybrids and fully electric vehicles, to around 13 percent. In addition, mild hybrids with a starter-generator and 48-volt system are conquering the product range, especially of the Group’s luxury vehicles.

In Europe, the all-electric compact SUV will be launched as the EQB 300 4MATIC with 168 kW and as the EQB 350 4MATIC with 215 kW. The ranges according to WLTP are 419 kilometres in each case. Further variants to meet specific customer requirements will follow, including a particularly long-range version.

Generous space and variable, level boot

The EQB enriches the successful Mercedes compact car family and is closely related to two models in particular: to the EQA, whose advanced drive technology it shares, and to the GLB compact SUV. This is where the long wheelbase (2829 millimetres), the spacious and variable interior and the optional third row of seats with two additional individual seats come from.

The dimensions of the five-seater: 4684/1834/1667 millimetres (length/width/height). Space is generous. The headroom in the first row of seats is 1035 millimetres, in the second it is 979 millimetres for the five-seater. At 87 millimetres, the knee space in the rear of the five-seater reaches a comfortable level. The boot is level and spacious: the load volume of 495 to 1710 or 465 to 1620 litres (figures for five- and seven-seaters respectively) has the qualities of a Mid-range station wagon. The backrests of the seats in the second row can be adjusted in several stages as standard, and this row features fore/aft adjustment of 140 millimetres as an option. This enables the boot to be enlarged by up to 190 litres and put to versatile use.
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As an option, the EQB has a third row of seats comprising two extra individual seats. The seats offer people up to a height of 1.65 metres a comfortable amount of space. Extensive safety features include retractable head restraints, seat belts with belt tensioners and force limiters on all outer seats and a side windowbag that also covers passengers in the third row. A total of up to four child seats can be fitted in rows two and three, plus one more in the front passenger seat. To increase luggage space, the third-row seats can be lowered flush into the load floor.

Efficient driving pleasure and Navigation with Electric Intelligence

ECO Assist offers a recuperation process optimised to the particular situation. It incorporates navigation data, traffic sign recognition and information from the vehicle sensors into its efficiency strategy. Anticipatory driving saves power, thereby extending the range.

The standard Navigation with Electric Intelligence also contributes to the effortless handling of the EQB in everyday life. This calculates the fastest route to the given destination. On the basis of continual range simulations, the system makes allowance for any necessary charging stops as well as for numerous other factors, such as the topography and the weather. It is also able to react dynamically to changes, for instance in the traffic situation or personal driving style. In addition, the Navigation with Electric Intelligence ensures that the high-voltage battery is brought to an optimal charging temperature before a planned charging stop, if required.

Sophisticated charging technology, large network and compensation through green electricity

At home or at public charging stations, the EQB can be conveniently charged at up to 11 kW with alternating current (AC) using the onboard charger. The charging time required for a full charge depends on the available infrastructure and the country-specific vehicle equipment. Charging at a Mercedes-Benz Wallbox is considerably faster than at a domestic power socket.

And it is of course even faster at direct current (DC) fast-charging stations. Depending on the SoC (State of Charge) and the temperature of the high-voltage battery, the EQB charges at a corresponding charging station with a maximum power of up to 100 kW. The charging time is then just over 30 minutes from 10-80 percent SoC. And after just 15 minutes, electricity is recharged for up to another 150 kilometers (WLTP). For AC and DC charging, the EQB is equipped as standard in Europe and the USA with a CCS (Combined Charging Systems) connector in the right-hand side panel.

Via Mercedes me Charge, EQB drivers will be able to use one of the most extensive charging networks in the world: this currently comprises more than 600,000 AC and DC charging stations across 31 countries. Mercedes me Charge allows Mercedes-EQ customers convenient use of the charging stations of various providers, while they also benefit from an integrated payment function with simple billing processes. With the EQB, one year of Mercedes me Charge is included.

In Europe, Mercedes-Benz guarantees by means of high-quality certificates of origin that electricity from renewable energies is fed into the grid for charging volumes that flow via Mercedes me Charge. With Mercedes me Charge, customers can charge at more than 250,000 public charging stations across Europe, where Mercedes-Benz ensures subsequent compensation through green electricity.

Cooperative support for the driver and high level of crash safety

The EQB features intelligent driving assistance systems with cooperative support for the driver. Active Lane Keeping Assist and Active Brake Assist are fitted as standard. In many critical situations, the latter has the ability to prevent a collision or reduce its severity with autonomous braking. The system is also able to brake for stationary vehicles and crossing pedestrians at typical city speeds. The enhanced functions of the Driving Assistance Package include, for example, the turning manoeuvre function, the emergency corridor function, the exit warning function alerting the driver to approaching cyclists or vehicles, and a warning when pedestrians are detected near zebra crossings.

The EQB is also a true Mercedes when it comes to passive safety. Building on the robust bodyshell structure of the GLB, the body of the EQB was adapted to the special requirements of an electric car. The battery sits within a frame made out of extruded sections. This takes on a structural function which until now was maintained by the cross members in the underfloor. A battery guard in the front area of the battery is able to prevent the energy storage unit from being pierced by foreign objects.

Of course, the EQB had to pass the brand’s usual extensive crash test programme. Stringent requirements for the battery and all components carrying electrical current also apply.

Drive system

The EQB starts as the EQB 300 4MATIC with 168 kW and as the EQB 350 4MATIC with 215 kW. The ranges according to WLTP are 419 kilometres in each case. Further variants to meet specific customer requirements will follow, including a particularly long-range version.

An asynchronous motor is used at the front axle. The electric motor, a fixed-ratio transmission with differential, the cooling system and the power electronics form a highly integrated, very compact unit – the electric powertrain (eATS).

In addition, the EQB 300 4MATIC and EQB 350 4MATIC also have an eATS on the rear axle with a newly developed permanently excited synchronous motor. It is extremely compact in design. In a permanently excited synchronous motor, the rotor of the AC motor is fitted with permanent magnets. The magnets – and thus the rotor – follow the rotating alternating current field in the stator windings. The engine is referred to as synchronous because the rotor turns at the same rate as the magnetic field of the stator. The frequency is adapted to the speed demanded by the driver in the frequency inverters of the power electronics. The advantages of this design include high power density, high efficiency and high output consistency.

In the 4MATIC versions, the power demand between the front and rear axles is intelligently regulated 100 times per second, depending on the driving situation. The Mercedes-EQ philosophy is to optimise consumption by using the rear electric motor as often as possible, while the asynchronous motor at the front axle generates only minimal drag losses in partial-load operation.

In overrun mode or during braking, the electric motors become alternators: their mechanical rotation is converted into electrical energy and used to charge the high-voltage battery – a process known as recuperation.

The battery: part of the intelligent thermal management system

The EQB is fitted with a lithium-ion battery with a high energy density. It has a maximum voltage of 420 V and, with a nominal capacity of around 190 Ah, has a usable energy content of 66.5 kWh.

The battery is made up of five modules and is located underneath the passenger compartment in the middle of the vehicle. An aluminium housing as well as the body structure of the vehicle itself protect the component from potentially touching the ground and against loose chippings. The battery housing is part of the vehicle structure and thus an integral part of the crash concept.

The battery is part of the intelligent thermal management system of the EQB. To ensure that it is always kept within the optimum temperature range, it can be cooled or heated as required via a coolant-fed plate underneath the battery.

If Navigation with Electric Intelligence is activated, the battery may also be pre-heated or cooled while driving in order to ensure that it is within the ideal temperature window for a rapid charging station. On the other hand, if the battery is cold when the car reaches the rapid charging station, a considerable proportion of the charging capacity will initially be used simply to warm it up. The net effect is to optimise the charging time – important, as a means of significantly shortening the charging stop.

As for all other high-voltage batteries, Mercedes-Benz issues a battery certificate, thus providing a performance warranty. This is valid for eight years or a distance covered of 160,000 kilometres and guarantees a properly functioning high-voltage battery: the certificate also covers capacity loss in the battery.

Charging management: CCS charging socket for alternating current as well as direct current

At home or at public charging stations, the EQB can be conveniently charged at up to 11 kW with alternating current (AC) using the onboard charger. The charging time required for a full charge depends on the available infrastructure and the country-specific vehicle equipment. Charging at a Mercedes-Benz Wallbox is considerably faster than at a domestic power socket.

And it is of course even faster at direct current (DC) fast-charging stations. Depending on the SoC (State of Charge) and the temperature of the high-voltage battery, the EQB charges at a corresponding charging station with a maximum power of up to 100 kW. The charging time is then 32 minutes from 10-80 per cent SoC. And after just 15 minutes, electricity is recharged for up to another 300 kilometers (WLTP). For AC and DC charging, the EQB is equipped as standard in Europe and the USA with a CCS (Combined Charging Systems) connector in the right-hand side panel.

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