What is CAC and why is it key for a dealership?
The CAC (Customer Acquisition Cost) is the average cost you incur to acquire a new customer. In the context of a dealership, it includes everything you invest to close a sale: advertising, marketing tools, sales team salaries, commissions and any expense related to lead generation.
Simple example: if you spend €3,000 a month on marketing and achieve 10 sales, your CAC is €300 per customer.
Why does it matter? Because it lets you know whether you are spending too much to acquire customers, whether your strategy is profitable and when it is time to adjust your campaigns.
How to calculate CAC step by step
1. Add up all marketing and sales expenses over a period (monthly, quarterly)
Include:
Online advertising (Google, Meta, portals)
Sales staff salaries and commissions
Automation tools and CRM
External agencies or freelancers
2. Divide that total by the number of customers acquired in that period
Formula:
CAC = Total marketing and sales spend / Number of new customers
Practical example:
Spend: €4,500
Sales: 15 cars
CAC: €4,500 / 15 = €300 per customer
Tip: Use a CRM to record where each customer came from. The better you attribute the sale to the channel, the more accurate your CAC will be.
What is marketing ROI and how is it interpreted?
The ROI (Return on Investment) is the return you get for every euro invested in marketing. It is one of the most important indicators for knowing whether your campaigns are profitable.
Why is it vital? Because it is not just about selling, but about making money from those sales. A positive ROI indicates that marketing is working; a negative one, that you are losing money.
Note: A low ROI is not always bad if you are gaining volume, but it should be balanced at an overall level.
Formula for calculating marketing ROI for dealerships
ROI = [(Revenue generated - Marketing investment) / Marketing investment] x 100
Applied example:
Revenue generated from sales = €50,000
Total marketing investment = €5,000
ROI = [(50,000 - 5,000) / 5,000] x 100 = 900%
This means that for every euro invested, you made 9.
Advice: Make sure you include only sales attributable to marketing, and measure by channel if possible (Google Ads, social media, email, etc.).
Common mistakes when calculating CAC and ROI in dealerships
Not including all real costs, such as salaries or tools
Not correctly attributing customers to the channels that generated them
Mixing periods or campaign types, making comparison difficult
Ignoring offline leads, such as those coming through referrals or by phone
Tips to improve your CAC and maximise ROI
Optimise your campaigns: invest more in the channels that convert best
Qualify leads properly: don’t waste time on contacts with no real interest
Automate responses and follow-up: speed up closing
Retain your customers: a repeat customer has an almost zero CAC
Align marketing and sales: when they work together, results improve noticeably
Recommended tools
Dealcar: Specialised software for dealerships that lets you record leads, link them to sales and visualise CAC and ROI in real time from an intuitive control panel.
HubSpot or Zoho CRM: Good options for customer management if you already have more complex processes
Google Analytics and Looker Studio: for measuring web conversions and building visual dashboards
Custom spreadsheets: useful for getting started with tracking if you do not use integrated software
Conclusion: measure to scale
Measuring your CAC and ROI gives you real control over your marketing strategy. In a sector as competitive as automotive, knowing which channel works, how much each customer costs and how much profit each euro invested leaves you can make the difference between growing and stagnating.
It is not just about investing in marketing, but doing it intelligently. And that starts with measuring properly.
Frequently asked questions (FAQs)
What is a reasonable CAC for a dealership?
It depends on the type of car, the acquisition channel and the profit margin. As a general rule, it should be below 10-15% of the net margin of each sale.
How long can it take to see a positive ROI?
Some campaigns generate quick results (such as one-off promotions) and others require time (branding, SEO positioning). In general, a good measurement system starts to provide clear insights in 30-90 days.
Can the ROI of offline campaigns be measured?
Yes, if you implement traceability mechanisms such as coupons, customer source surveys or specific promotional codes.
What is CAC and why is it key for a dealership?
The CAC (Customer Acquisition Cost) is the average cost you incur to acquire a new customer. In the context of a dealership, it includes everything you invest to close a sale: advertising, marketing tools, sales team salaries, commissions and any expense related to lead generation.
Simple example: if you spend €3,000 a month on marketing and achieve 10 sales, your CAC is €300 per customer.
Why does it matter? Because it lets you know whether you are spending too much to acquire customers, whether your strategy is profitable and when it is time to adjust your campaigns.
How to calculate CAC step by step
1. Add up all marketing and sales expenses over a period (monthly, quarterly)
Include:
Online advertising (Google, Meta, portals)
Sales staff salaries and commissions
Automation tools and CRM
External agencies or freelancers
2. Divide that total by the number of customers acquired in that period
Formula:
CAC = Total marketing and sales spend / Number of new customers
Practical example:
Spend: €4,500
Sales: 15 cars
CAC: €4,500 / 15 = €300 per customer
Tip: Use a CRM to record where each customer came from. The better you attribute the sale to the channel, the more accurate your CAC will be.
What is marketing ROI and how is it interpreted?
The ROI (Return on Investment) is the return you get for every euro invested in marketing. It is one of the most important indicators for knowing whether your campaigns are profitable.
Why is it vital? Because it is not just about selling, but about making money from those sales. A positive ROI indicates that marketing is working; a negative one, that you are losing money.
Note: A low ROI is not always bad if you are gaining volume, but it should be balanced at an overall level.
Formula for calculating marketing ROI for dealerships
ROI = [(Revenue generated - Marketing investment) / Marketing investment] x 100
Applied example:
Revenue generated from sales = €50,000
Total marketing investment = €5,000
ROI = [(50,000 - 5,000) / 5,000] x 100 = 900%
This means that for every euro invested, you made 9.
Advice: Make sure you include only sales attributable to marketing, and measure by channel if possible (Google Ads, social media, email, etc.).
Common mistakes when calculating CAC and ROI in dealerships
Not including all real costs, such as salaries or tools
Not correctly attributing customers to the channels that generated them
Mixing periods or campaign types, making comparison difficult
Ignoring offline leads, such as those coming through referrals or by phone
Tips to improve your CAC and maximise ROI
Optimise your campaigns: invest more in the channels that convert best
Qualify leads properly: don’t waste time on contacts with no real interest
Automate responses and follow-up: speed up closing
Retain your customers: a repeat customer has an almost zero CAC
Align marketing and sales: when they work together, results improve noticeably
Recommended tools
Dealcar: Specialised software for dealerships that lets you record leads, link them to sales and visualise CAC and ROI in real time from an intuitive control panel.
HubSpot or Zoho CRM: Good options for customer management if you already have more complex processes
Google Analytics and Looker Studio: for measuring web conversions and building visual dashboards
Custom spreadsheets: useful for getting started with tracking if you do not use integrated software
Conclusion: measure to scale
Measuring your CAC and ROI gives you real control over your marketing strategy. In a sector as competitive as automotive, knowing which channel works, how much each customer costs and how much profit each euro invested leaves you can make the difference between growing and stagnating.
It is not just about investing in marketing, but doing it intelligently. And that starts with measuring properly.
Frequently asked questions (FAQs)
What is a reasonable CAC for a dealership?
It depends on the type of car, the acquisition channel and the profit margin. As a general rule, it should be below 10-15% of the net margin of each sale.
How long can it take to see a positive ROI?
Some campaigns generate quick results (such as one-off promotions) and others require time (branding, SEO positioning). In general, a good measurement system starts to provide clear insights in 30-90 days.
Can the ROI of offline campaigns be measured?
Yes, if you implement traceability mechanisms such as coupons, customer source surveys or specific promotional codes.
