Mercedes-Benz C300e
Charging cable
Charges about 50% faster on 22 kW public posts than a 7.4 kW cable.
Why this fits your C300e+−
The Mercedes-Benz C300e has a Type 2 inlet and a three-phase 11kW onboard charger. The 22kW cable carries its full 11kW on three-phase chargers. A 7.4kW cable would cap it. On a single-phase home wallbox both cables charge at the same 7.4kW.
Specifications+−
Delivery & returns+−
Free tracked UK delivery on every order. Built to order in the UK and dispatched fast. 30-day no-fuss returns.
Note: Large PHEV battery ~25.4kWh. AC up to 11kW, DC rapid up to 55kW CCS.
How long does it take?
Charging
the Mercedes-Benz C300e.
The Mercedes-Benz C300e is a plug-in hybrid saloon or estate, built on the W206 generation C-Class and sold in the UK from 2021. It carries a notably large 25.4kWh battery for a PHEV, which gives it a genuinely useful electric-only range for daily commuting, and it charges through a Type 2 inlet using the same CCS port for DC rapid charging up to 55kW. Both the saloon and estate variants share the same charging hardware.
For day-to-day charging at home or at public AC points, you need a Type 2 to Type 2 cable. The C300e's onboard AC charger accepts up to 11kW on three phases, which is above the 7.4kW limit of a typical single-phase UK home supply. Knowing your home supply type is the key decision when choosing a cable rating.
With 25.4kWh on board, the C300e is one of the larger PHEV batteries on the market. AC charging speed is the main factor for how quickly you can replenish it. Rapid (DC) times are for a 10 to 80% charge, the way manufacturers quote them. Real-world charging varies with temperature, battery state and the charger itself.
7.4 kW or 22 kW?
Which cable does
the C300e need?
The C300e's onboard AC charger is rated at 11kW on three phases. Most UK homes run on a single-phase supply, which limits charging to 7.4kW regardless of which cable rating you choose. For the vast majority of owners, a 7.4kW Type 2 cable is the right pick: it delivers every kilowatt your home wallbox or public AC point can provide on a single-phase connection.
A 22kW three-phase rated cable makes sense only if you have a three-phase supply at home or you regularly stop at 22kW public AC charge points. In those situations the C300e draws its full 11kW from the point. On a standard single-phase home setup, stepping up to a 22kW cable does not add any speed. It is a future-proofing buy rather than an immediate performance upgrade.
What does it cost to charge?
Charging the 25.4kWh battery from empty costs around £1.90 on an off-peak EV tariff at roughly 7.5p per kWh, or around £6.85 at a standard rate of roughly 27p per kWh. The large battery size means the C300e rewards regular overnight charging to keep costs down. Public rapid DC charging is considerably dearer per kWh, so it is better suited to topping up on longer journeys than to daily use. Check current tariff rates, as they vary.
Also for your C300e
Goes well with.
Plug & Cable Holder · Type 2
Wottz Plug and Cable Holder
Carry Bag
Wottz Carry Bag
Dust Cap · Type 2
Wottz Dust Cap
Mercedes-Benz C300e FAQs
Good
questions.
Still not sure? Our team will confirm the right cable for your vehicle.
Contact usWhat charging cable does the Mercedes-Benz C300e need?+−
The Mercedes-Benz C300e has a Type 2 inlet, so it needs a Type 2 to Type 2 cable for UK home and public charging. It charges on up to three-phase AC at up to 11kW.
Can the Mercedes-Benz C300e charge at 22kW?+−
Yes, the Mercedes-Benz C300e has a three-phase onboard charger, so with a 22kW cable and a three-phase supply it can charge at up to 11kW.
What length charging cable should I get?+−
5m suits most home and public charge points. Choose 7.5m or 10m if the charge point is far from your car's charging port or you park on the far side of a bay.
What cable does the Mercedes C300e need?+−
A Type 2 to Type 2 cable, the same standard connector used across nearly all modern plug-in vehicles in Europe. A 5m cable suits most drives and driveways. For a single-phase home supply, a 7.4kW cable gives you the full speed available. A 22kW cable only benefits you if you have a three-phase supply or use 22kW public AC points regularly.
Can the Mercedes C300e charge at 11kW?+−
Yes, the C300e's onboard AC charger accepts up to 11kW, but only on a three-phase supply. Most UK homes have single-phase electricity, which caps AC charging at 7.4kW whatever cable or wallbox you use. On a three-phase supply or a 22kW public AC point, the car will draw its full 11kW.
How long does the Mercedes C300e take to charge at home?+−
On a 7.4kW single-phase home wallbox, the 25.4kWh battery takes around 3.5 to 4 hours from empty. On a three-phase supply at 11kW, that drops to around 2.5 hours. A standard 3-pin socket is much slower at roughly 9 to 10 hours and is best kept as an emergency option rather than regular use.
Does the Mercedes C300e support DC rapid charging?+−
Yes, which is unusual for a PHEV. The C300e has a CCS port and supports DC charging up to around 55kW. That means a significant charge can be added quickly at a public rapid charger. Note that the tethered cable at the DC charger is used for this; you do not need a cable of your own for DC rapid charging.