BMW i8 Roadster (2018)
The complete guide to charging your BMW i8 Roadster (2018), covering electric range, how long it takes to charge, how much it costs, and much more.
Last updated: Jul 14, 2022 • 7 min read
The i8 Roadster is BMW’s response to the question “The i8 Coupe is a stunning vehicle, but what would it look like if it was a convertible?”. The Roadster is an open-top variant of the iconic plug-in sports car that only further improves on the Coupe’s appeal. It’s got a higher electric-only driving range, and retains its impressive levels of acceleration and power. Plus, the i8’s key asset - those looks! - remain as spectacular as ever. Oh, and did we mention it has butterfly doors? Because it does!
Charging time for a BMW i8
The table below shows the estimated time to charge your i8 from empty to full. For rapid charging, we show the time to charge from 20% - 80%, as charging tends to slow outside this range to protect the battery.
|Charging method||Typically found at||Charging time*||Range/hour**|
|Empty to full|
|3-pin plug||Home||4 h||5 m/h|
|3.6kW||Home / Work||3 h||9 m/h|
|7kW||Home / Work / Public Locations||3 h||9 m/h|
|22kW||Work / Public Locations||3 h||9 m/h|
* Based on Pod Point estimates, charging time can differ based on the ambient temperature, the state of the battery (e.g. empty or half full) and variation in charging rate. Max charging rate may also be limited by the vehicle.
** Range per hour is the number of miles you can expect to get from an hour of charging at the relevant rate.
Connector type and charging rates
You can charge your BMW i8 with a Type 2 connector at home, work or at a public charging point.
Where you can charge a BMW i8
You can charge your BMW i8 conveniently at home, plug-in when you arrive at work or top up (mostly for free!) when you're out and about at locations including supermarkets and public car parks.
On Public Networks
* Standard pricing, excludes any grants.
** Other charging options are also available, speak to our team for more information.
*** Available for vehicles with either CCS or CHAdeMO connectors.
Cost to charge
Cost of charging a BMW i8
The cost of charging your car will vary between home, work and public chargepoints (below are our estimates). Charging on the Pod Point Network is usually free through the Pod Point App.
|Home (empty to full)*||£2.37||11.76p|
|Public rapid chargers (20%-80%)**||N/A||N/A|
* Assumes tariff of 28p/kWh. The cost of home charging will vary depending on your electricity rate.
** Assumes tariff of 44p/kWh applicable to most network rapid chargers as of April 2022.
|Official range (WLTP*)||N/A|
|Official range (NEDC*)||31 miles|
|Pod Point Confidence Range**||20 miles|
* For information on "WLTP", "NEDC" and more, please visit our Electric Vehicle Dictionary.
** Pod Point Confidence Range is the maximum distance we’d be confident driving on electric power between charges. Real range will depend on various factors including driving conditions, personal driving style, outside temperature, heating / air conditioning, etc.
|0-62 mph||4.6 seconds|
|Top speed||155 mph|
|Engine power||374 bhp / 275 kW|
|Battery size||9.4 kWh|
|Usable battery (Pod Point estimate)||8.5 kWh|
|Official battery efficiency (WLTP)||N/A|
|Official battery efficiency (NEDC)||N/A|
|Battery efficiency (Pod Point estimate)||420 Wh/mile|
|Official MPG (WLTP)||128 mpg|
|Official MPG (NEDC)||141 mpg|
|Official CO2 emissions (WLTP)||N/A|
|Official CO2 emissions (NEDC)||46 gCO2/km|
|CO2 emissions from UK grid electricity usage (Pod Point calculated)*||49 gCO2/km|
* This metric estimates the environmental impact of driving your electric vehicle based on how the electricity that powers your car is generated. We take the average carbon intensity across the UK grid measured throughout 2021 to calculate the expected grams of CO2 emitted per 1 km driven. The actual number will vary by region, when you charge (e.g. carbon intensity is usually lower overnight period) and whether your electricity comes from more renewable sources than the average.
Purchase, Tax & Grants
The BMW i8 is only eligible for the EV chargepoint grant, but you will benefit from £0 year 1 road tax.
* On-the-road price including Plug-in Grant, if applicable.
|Vehicle Excise Duty (VED)||Amount|
|Benefit in Kind (BiK) tax year||BiK tax rate||Annual BiK value|
|For cars registered after 6 April 2020|
* For further information including how to calculate personal BiK liabilities, please visit our Electric Car Tax guide.
|London Congestion Zone Charge*||£15|
|Ultra Low Emission Zone Charge**||£0|
* A £10 annual registration fee will still apply to each vehicle.
** For further information on London's Ultra Low Emission Zones (ULEZ), please visit our ULEZ guide.
|OZEV EV chargepoint grant||✔||£350||Can be used to reduce the cost of a home charger with installation|
|OZEV Plug-in Grant||✘||£0||Used to reduce the cost of the vehicle|
|EST Domestic Charge Point Grant||✔||£300||Can be used in Scotland in addition to the EV chargepoint grant to reduce the cost of a home charger with installation|
* Prices for vehicles are typically displayed with the Plug-in grant discount already applied. Home charging grants are dependent on status of the grant, and subject to eligibility requirements of the applicant as well as the vehicle.