Electric Cars: The Basics
For those of you new to zero-emission electric driving, we recommend a read of the following articles:
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The Mercedes-Benz B250e Hatchback PHEV
Mercedes-Benz, simply known as Mercedes, is a leading global luxury automative manufacturer based in Germany. The company is headquartered in Stuttgart and is famed for its high quality passenger vehicles, to include the Mercedes-Maybach. However, the company is also a leader in manufacturing commercial vehicles, to include the plug-in Mercedes eSprinter commercial EV and the plug-in Mercedes eVito electric van.
Mercedes-Benz EQ is the sub-brand used by the company for its portfolio of battery-electric vehicles (BEVs), plug-in hybrid electric vehicles (PHEVs) and mild hybrids. The pure electric cars are branded as EQ, while the PHEVs are branded as EQ Power. The mild hybrid vehicles are branded as EQ Boost. The PHEV portfolio includes:
- Mercedes A-Class Hatchback PHEV
- Mercedes A-Class Saloon PHEV
- Mercedes B-Class Hatchback PHEV
- Mercedes C-Class Saloon PHEV
- Mercedes C-Class Estate PHEV
- Mercedes E-Class Saloon PHEV
- Mercedes E-Class Estate PHEV
- Mercedes S-Class Saloon PHEV
- Mercedes CLA Coupé PHEV
- Mercedes CLA Shooting Brake PHEV
- Mercedes GLA SUV PHEV
- Mercedes GLC SUV PHEV
- Mercedes GLC Coupé PHEV
- Mercedes GLE SUV PHEV
- Mercedes GLE Coupé PHEV
The Mercedes-Benz B Class premium hatchback is currently in its third generation. It was first introduced in 2005. The third generation model was launched in 2018 at the Paris Motor Show. The B Class also includes the B250e plug-in hybrid electric vehicle (PHEV) variant.
Like the Mercedes A-Class plug-in hybrid, the B-Class plug-in hybrid is also well suited for private and business drivers, who seek a premium badge, lower tailpipe emissions and a higher level of fuel efficiency, in a smaller-sized electric vehicle (EV). In common with both models, is the size of the EV battery. The B250e PHEV also has a 15.6 kWh onboard EV battery, with a zero-tailpipe emission electric range up to 65 km (WLTP).
The vehicle size and EV range is well suited for driving in cities and towns, but also just as appropriate for shorter distance motorway driving. Driving the EV on electric mode will help save money and also reduce local air pollution. Depending on where and when the electric car is charged, driving a PHEV on pure electric mode, will cost between 5 cents and 10 cents per km. Driving a conventional combustion engine car is far more expensive! So, bottom-line, driving on e-mode does lower the cost of motoring and help achieve real financial savings.
The more a plug-in hybrid electric vehicle is driven on the EV mode, the higher the fuel efficiency of the vehicle. Mercedes claims the PHEV has a fuel economy up to 1.1 l/100km. Real-world economy will certainly be less efficient, but substantially better compared to the conventional internal combustion (ICE) variant (6.1 l/100km).
The PHEV has a 7.4 kW AC onboard charger. Put another way, the EV is capable of single-phase AC charging. Given that most homes in Ireland are supplied by single-phase power supply, the 7.4 kW onboard charger is well suited. The Mercedes plug-in hybrid does not offer fast DC charging.
The best way to charge an EV at home is to use a dedicated home EV charger, like myenergi zappi. We at e-zoomed discourage the use of 3-PIN domestic sockets for charging an electric car. e-zoomed supplies and installs a vast range of high quality residential EV chargers.
The Mercedes B-Class plug-in hybrid is practical, easy to drive and park. Perfect for congested town and city centres. The interior of the EV is luxurious and high quality, as one can expect from Mercedes. There is also ample headroom and legroom for rear seat passengers. Though the boot space has been reduced due to the onboard EV battery, it still offers decent cargo space (405 L).
Moreover, the EV is technology-filled, to include: Mercedes MBUX infotainment system, wireless charging, driving assistance package, 10.25-inch touchscreen media display, active brake assist – forward collision warning system with autonomous braking intervention, Mercedes me remote services, KEYLESS-GO starting function and a lot more.
In terms of driving performance, the front-wheel drive B250e PHEV will neither disappoint, nor exhilarate! The Mercedes plug-in hybrid combines a 1.3-litre (4-cylinder) petrol engine with a 75 kW electric motor. The electric car achieves 0-100 km/h in 6.8 seconds (maximum power: 218 HP). In electric mode, the top speed of the EV is 140 km/h and using the combustion engine, the top speed is 235 km/h.
The plug-in electric car is suitable for both private and company car drivers. Company car drivers can take advantage of the lower tailpipe emissions (24g CO2/km) and financial savings.
Bottom-line, electric driving is good for the environment and the wallet!
| PROS | CONS |
|---|---|
| Well suited for urban driving | Cheaper PHEV hatchback alternatives |
| Decent emission-free EV range | Exterior style a little outdated |
| An efficient electric car and low tailpipe emissions | DC charging not available |
Gallery
The Mercedes-Benz B Class PHEV Hatchback (credit: Mercedes)
| At A Glance | |
|---|---|
| EV Type: | Plug-In Hybrid Electric Vehicle (PHEV) |
| Body Type: | Hatchback |
| Engine: | Petrol/ Electric |
| Available In Ireland: | Yes |
| Variants (1 Option) |
|---|
| Mercedes-Benz B 250 e (from € 63,960) |
| EV Battery & Emissions | |
|---|---|
| EV Battery Type: | Lithium-ion |
| EV Battery Capacity: | Available in one battery size: 15.6 kWh |
| Charging: | DC charging not available. On-board charger 7.4 kW AC |
| Charge Port: | Type 2 |
| EV Cable Type: | Type 2 |
| Tailpipe Emissions: | 24g (CO2/km) |
| Warranty: | 6 years or 100,000 km |
| Average Cost Of Residential Charging | |
|---|---|
| Battery net capacity : 8.8 kWh | € 2.10 |
| Battery net capacity : 11.6 kWh | € 2.78 |
| Battery net capacity : 12.0 kWh | € 2.87 |
| Battery net capacity : 13.10 kWh | € 3.14 |
| Battery net capacity : 14.10 kWh | € 3.37 |
- Note 1: The average cost of residential electricity in Ireland varies depending on the region, supplier and type of energy used. An average for Ireland is 23.97 cents/kWh.
- Note 2: Not all EV manufactures make available the data on net EV battery capacity, and in a number of instances the EV battery capacity advertised, does not state if it is gross or net capacity. In general, usable EV battery capacity is between 85% to 95% of the gross available capacity.
| Charging Times (Overview) | |
|---|---|
| Slow charging AC (3 kW – 3.6 kW): | 6 – 12 hours (dependent on size of EV battery & SOC) |
| Fast charging AC (7 kW – 22 kW): | 3 – 8 hours (dependent on size of EV battery & SoC) |
| Rapid charging AC (43 kW): | 0-80%: 20 mins to 60 mins (dependent on size of EV battery & SoC) |
- Note 1: SoC: state-of-charge
| Dimensions | |
|---|---|
| Height (mm): | 1574 |
| Width (mm): | 2020 |
| Length (mm): | 4419 |
| Wheelbase (mm): | 2729 |
| Turning Circle (m): | 11 |
| Boot capacity (L): | 405 |
| Mercedes-Benz B250e | |
|---|---|
| EV Battery Capacity: | 15.6 kWh |
| Pure Electric Range (WLTP): | 65 km |
| Electric Energy Consumption (kWh/100km): | 15.4 |
| Fuel Consumption (l/100km): | 1.1 |
| Charging: | DC charging not available. On-board charger 7.4 kW AC |
| Top Speed: | 235 km/h (electric: 140 km/h) |
| 0-100 km/h: | 6.8 seconds |
| Drive: | Front-wheel drive (FWD) |
| Electric Motor (kW): | 75 |
| Max Power (hp): | 218 (system output) |
| Torque (Nm): | 450 (system output) |
| Transmission: | Automatic |
| Seats: | 5 |
| Doors: | 5 |
| Kerb Weight (kg): | 1,725 |
| Colours: | 6 |
| NCAP Safety Rating: | Five-Star |
Vehicle-to-Grid (V2G): An Introduction
V2G is an innovative bidirectional technology that allows the onboard EV battery to be charged and discharged i.e. electrical energy to be exported/ discharged from the onboard EV battery to the grid via a V2G compatible EV charger. It also allows for vital informational flow (data) to the grid. In effect, the V2G technology allows an EV battery to be used as a grid-connected energy storage unit.
| Benefits: V2G | |
|---|---|
| Lower energy costs: | V2G can lower utility costs to include, lowering wholesale and retail energy costs |
| Improving the grid’s response ability: | V2G can improve the stability of the intra-day supply and demand needs, improving the grids ability to meet the needs of peak demand |
| Improving power quality: | V2G can improve power quality by controlling voltage and power factors |
| Increase resilience: | V2G can improve the resilience of the grid and electricity network in significantly adverse conditions |
| Increase use of renewable energy: | V2G enables an increase in the contribution of renewable energy to the national energy generation mix. The higher the contribution of RE, the greener the power supplied |
| Reduce cost of EV ownership: | V2G can reduce the cost of EV ownership by enabling EV owners to earn from exporting energy to the grid |
| Improves national energy security: | V2G can improve the national energy security of a country by reducing dependence on imported energy |
| Improve environmental impact: | V2G can improve the environmental impact of energy usage and transportation by reducing the dependence on fossil fuels |
While e-zoomed uses reasonable efforts to provide accurate and up-to-date information, some of the information provided is gathered from third parties and has not been independently verified by e-zoomed. While the information from the third party sources is believed to be reliable, no warranty, express or implied, is made by e-zoomed regarding the accuracy, adequacy, completeness, legality, reliability or usefulness of any information. This disclaimer applies to both isolated and aggregate uses of this information.
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