Schedule mock interviews on the Meeting Board, join the latest community discussions in our Consulting Q&A and find like-minded Interview Partners to connect and practice with!
Back to overview

How to deal with B2B/B2C in market sizing - for instance, electric car market

Hey, 

I have this issue frequently when doing market sizing. It is quite straight forward to narrow a problem down in terms of the B2C market (age, demographics, income ... etc.) and then arrive at a first market estimate (let's say for electric cars sold). However, I then struggle how to walk through a second branch, such as B2B. Is there a common rule of thumb of how many business there are per person? I would assume for 20 persons, there is at least one business. Then I would have to segment the businesses by industry which can get quite daunting. 

What is the way to go here?

6
2.1k
20
Be the first to answer!
Nobody has responded to this question yet.
Top answer
Vlad
Coach
on Dec 09, 2020
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School

Hi,

In general, you have two options of including different use cases in your market sizing (b2b. commercial, etc):

  1. Calculate the private use first and then make an assumption re b2c / b2b ratio. E.g. calculate the private real estate in the city and then make an assumption about the commercial real estate as the relative % of private.
  2. You can add the b2b use cases right at the beginning of your calculations. For example, if you need to calculate the tire market for light vehicles, you can assume that every 5th car in the street is commercial, thus the total number of cars = # of private cars / 4 * 5. After that, you can calculate the whole tire market

In your particular case, I would try to clarify what exactly b2b means. Are you talking about the companies that subsidize the rides for the employees? (Then you can use the % of your friends who have their rides subsidized. Although B2b, in this case, is already included in the private consumption). Or you are talking about the Uber drivers who use carsharing because they can't afford car ownership? (Make an assumption re the % of taxis).

Best

Ian
Coach
on Dec 09, 2020
Top US BCG / MBB Coach - 5,000 sessions |Tech, Platinion, Big 4 | 9/9 personal interviews passed | 95% candidate success

Hi there,

Your question has me slightly confused, and I think it's because you're confusing yourself.

In general, you either do B2C OR to B2B. Likewise, you either do bottom-up OR top-down.

It's bizarre to do both. 

So, in the case of the EV market, I would very much to B2C and break it down by population segments (probably income). Once done, I have the total consumption of EVs. There is not need to do B2B at this point!

Anonymous A
on Dec 09, 2020
Why? Private person can buy cars but also businesses?
Clara
Coach
on Dec 10, 2020
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut

Hello!

This is one of the key clarifying questions at the beggining, when you are defining your population. 

Should I focus in B2B, B2C, or both? 

Hope it helps!

Cheers,

Clara

Deleted user
on Dec 09, 2020

Hey there,

Have a look at these threads:

  1. B2C Age Segmentation: https://www.preplounge.com/en/consulting-forum/segmenting-by-age-groups-for-market-sizing-8524
  2. B2B Market Sizing: https://www.preplounge.com/en/consulting-forum/b2b-market-sizing-1950

I think that should answer it for you?!
 

12
on Dec 30, 2020
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching

Hi, in addition to the solutions proposed by the other coaches in the discussion, I would like to suggest similar cases in the platform to practice with:

  • https://www.preplounge.com/en/consulting-forum/how-much-would-you-charge-to-clean-all-the-windows-in-seattle-4965
  • https://www.preplounge.com/en/consulting-forum/market-sizing-milk-consumption-5087
  • https://www.preplounge.com/en/consulting-forum/how-would-you-calculate-the-value-of-a-cow-4982
  • https://www.preplounge.com/en/consulting-forum/estimate-number-of-traffic-lights-in-a-london-5692

Hope it helps,
Antonello

Gaurav
Coach
on Dec 10, 2020
#1 MBB Coach(Placed 1000+ in MBBs & 1250+ in Tier2) | The Only 360° coach(Ex-McKinsey+Certified Coach+Active recruiter)

Hello there!

Some great answers above.
Have a look at this article on market-sizing, too:
https://www.preplounge.com/en/bootcamp.php/case-cracking-toolbox/identify-your-case-type/market-sizing

Do you need any further help?
GB