mike21070
Posts: 2
Joined: Thu Jul 25, 2019 12:03 pm

How much has your electric bill increased?

Thu Jul 25, 2019 12:09 pm

Hello,

Seriously thinking about a 2016 i3, but I haven't seen much regarding the monthly electric bill increases. I live in Phoenix, Arizona, so I'm wondering if anyone can help provide some information. Have you seen a huge increase in your monthly bill? I know it depends on time of day, but just general information would be helpful. Not sure if the increase in this bill is worth it.

Also...since I have your attention...any major reasons why I shouldn't buy a 2016? Some nice ones for about $16k, but once you look at 2017 they jump up to around $22-23, which is too rich for my blood. I know the battery is under warranty until 2024, so I figure I'll use the car for about 4-5 years before worrying about the battery.

Thanks for your help.

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MKH
Gold Member
Posts: 496
Joined: Fri Nov 02, 2018 5:48 am
Location: Dallas

Re: How much has your electric bill increased?

Thu Jul 25, 2019 12:54 pm

The general rule is that on-average, you will spend around 30% of what you spent on gas, on electricity charging your electric car for the same mileage. My rough calculations peg mine at around 20% cost of electricity vs what I previously spent on gas, but I had a small SUV (Honda Element) before, which only got 20 mpg city, and 25 mpg highway. Other maintenance costs are lower too. Once a year oil change, and brake flush every two years, if you have a Rex, and just the brake flush every two years for a BEV. On the other side of the coin, the special low-rolling-resistance tires don't seem to last as long as conventional tires, and they are more expensive - roughly $150 - $160 per tire for 19" wheels.

2016 is a good choice - most manufacturing issues/flaws have been worked out in the 2014-2015 models. Example - big (expensive) one in the 2014 were plastic motor mounts, with bolts that would shear and could damage the drive train. Software update to help prevent torque stress on mounts in 2014, New stronger bolts in 2015, New problem-free cast aluminum motor mounts in 2016.
Mark H.
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE

I33t
Posts: 894
Joined: Fri Dec 13, 2013 3:01 pm
Location: Australia

Re: How much has your electric bill increased?

Thu Jul 25, 2019 3:42 pm

We added large solar panels on the house in 2011 before we had the i3.

The solar panels has saved the cost of installing the panels for years ago, and it costs nothing to run the house and the i3 EV

Rarely takes the i3 to charge it anywhere else other than at our own house.

So the only cost of running the i3 is to pay to have the brake fluids done every 2 years, tyres when they run out, and the BMW place wants us to see it once a year.
2014 BMW i3 BEV deposit placed 19th Dec 2013
Delivered in Melbourne 4/12/2014. Arrived locally 11/12/14, with 24km on the clock.

vreihen
Posts: 245
Joined: Tue Apr 30, 2019 4:55 pm
Location: Orange County, NY (FN21vm)

Re: How much has your electric bill increased?

Thu Jul 25, 2019 5:59 pm

My smart EVSE is claiming that my 21 mile round-trip daily commute is using 7 kWh/day...including pre-condition at both ends. Yes, that's about 3.0 miles/kWh, and the car's guess-o-meter is claiming 4.4 miles/kWh because it doesn't measure pre-condition power usage. At our local ~$0.15/kWh power cost, that is $1.05. My diesel pickup gets 21 MPG on the same commute, and you don't even need a calculator to see that it uses 1.0 gallons of diesel @ $3.10. My 4-cylinder race car hates that commute, and only gets 20 MPG on its required $3.75/gallon super unleaded.

My DW picked up a brand new Kia Niro 100% electric EV a few weeks after I bought my i3 last spring. She does a 90 mile round-trip commute, and the same smart EVSE is claiming that she is using ~24 kWh/day doing mostly interstate driving. She claims that her former 6-cylinder pickup was costing her $20/day in gas, and I calculate that the electric usage is $3.70/day.

Ironically, the business right next to the office building where my DW works just installed a free public L2 charging station on Monday. Depending on the guilt factor, her commuting energy costs might go down to ZERO! NY State is offering a $4,000/plug grant for employers to install charging stations for their employees. I am pushing the paperwork through where I work to install four, and trust me there will be zero guilt factor when my commuting energy costs are zero. :twisted:

Back in the recent past, people used to get gas station credit cards where you had to pay the month's gas off at the end of every month. Charging at home and paying the power company is the same concept, only it costs way less.....
2015 BMW i3 BEV, Giga World, Tech and Driving Assistant packages, 15K miles

gt1
Posts: 347
Joined: Sat Nov 07, 2015 7:31 pm
Location: Baltimore

Re: How much has your electric bill increased?

Fri Jul 26, 2019 12:37 pm

The car can go about 4 miles on 1 kwh. You can make your own calculations based on the projected mileage and electricity costs.
The 2017s are more expensive mainly because they have a 50% larger battery.

n1o2c3a4c5h6e7t
Posts: 20
Joined: Wed May 01, 2019 12:35 pm

Re: How much has your electric bill increased?

Sat Oct 05, 2019 6:39 am

For about 5k miles/year, we were spending $100/year with the BMW i3 in Texas. For comparison, we spent $500/year for the same mileage with a Prius in the past.

Our costs have come down since then to $20-40/year for 5k miles with the BMW i3, but that is after installing solar panels for the house.

Obioban
Posts: 43
Joined: Wed May 22, 2019 6:16 am

Re: How much has your electric bill increased?

Mon Oct 07, 2019 5:40 am

OP: Depends on your electric cost. Ours is $0.068/kwh. The i3 gets 3-5 miles per kwh. Assuming 4 miles per kwh and a 25 miles of driving per day, you'd spend ~$0.43 per day on electricity.

I drive mine 100-150 miles per day, so $1.87... though 75% of my charging is done at work (free). :lol:

In my case, our electric bill has gone up ~$15 a month but our gas bill has gone down ~$700 per month. Or, over a year, our electric cost has gone up ~$180, but our gas cost has gone down ~$8400.

In order of cost preference, work/free pubic chargers > home charging >>>>>> public fast chargers (significantly more expensive).

I'd love to add solar to bring costs down further, but too many trees around my house.
gt1 wrote:
Fri Jul 26, 2019 12:37 pm
The car can go about 4 miles on 1 kwh. You can make your own calculations based on the projected mileage and electricity costs.
The 2017s are more expensive mainly because they have a 50% larger battery.
What? 2017s cost the same per mile as earlier cars. From an electric bill perspective, should be unchanged unless you couldn't make it home before and were paying for more expensive not home charging.
Last edited by Obioban on Tue Oct 08, 2019 4:20 am, edited 1 time in total.

gt1
Posts: 347
Joined: Sat Nov 07, 2015 7:31 pm
Location: Baltimore

Re: How much has your electric bill increased?

Mon Oct 07, 2019 7:03 am

gt1 wrote:
Fri Jul 26, 2019 12:37 pm
The car can go about 4 miles on 1 kwh. You can make your own calculations based on the projected mileage and electricity costs.
The 2017s are more expensive mainly because they have a 50% larger battery.
I was answering two separate questions by the OP.
1. How much does it cost to run an i3.
2. Why 2017s are priced much higher than 2016s.

Obioban
Posts: 43
Joined: Wed May 22, 2019 6:16 am

Re: How much has your electric bill increased?

Tue Oct 08, 2019 4:20 am

gt1 wrote:
Mon Oct 07, 2019 7:03 am
gt1 wrote:
Fri Jul 26, 2019 12:37 pm
The car can go about 4 miles on 1 kwh. You can make your own calculations based on the projected mileage and electricity costs.
The 2017s are more expensive mainly because they have a 50% larger battery.
I was answering two separate questions by the OP.
1. How much does it cost to run an i3.
2. Why 2017s are priced much higher than 2016s.
Ahhh, that makes much more sense. I thought were were saying it costs more to charge the 2017 because the battery holds more power :roll:

gt1
Posts: 347
Joined: Sat Nov 07, 2015 7:31 pm
Location: Baltimore

Re: How much has your electric bill increased?

Tue Oct 08, 2019 8:04 am

Technically, it does :lol:

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