What Is Net Promoter Score (NPS) at a Car Dealership, and How Is It Different From CSI?
NPS measures whether a customer would recommend a dealership. CSI measures satisfaction with a specific visit. Here's how the two scores differ and where phone handling shows up in each.
Net Promoter Score (NPS) measures how likely a customer is to recommend a dealership to someone else, on a 0-10 scale. It is a single relationship question, distinct from CSI, which scores satisfaction with one specific visit through an OEM-administered survey.
Dealermate is an AI call facilitation platform for Canadian automotive dealerships. NPS and CSI are often used interchangeably in dealership conversations, but they measure different things, come from different sources, and respond to different fixes.
How NPS Is Calculated
NPS comes from one question: "On a scale of 0 to 10, how likely are you to recommend this dealership to a friend or colleague?" Respondents are sorted into three groups. Scores of 9 or 10 are promoters. Scores of 7 or 8 are passives, counted in the total but not in the formula. Scores of 0 through 6 are detractors.
The score itself is the percentage of promoters minus the percentage of detractors, which produces a number between negative 100 and positive 100. A dealership with 50 percent promoters, 30 percent passives, and 20 percent detractors has an NPS of 30.
Unlike CSI, NPS is not administered by the manufacturer on a fixed schedule tied to a specific RO or sale. Most dealerships that track it run their own survey, through a CRM tool, a third-party reputation platform, or a simple post-visit email, and the cadence varies by store.
NPS vs. CSI: What Each One Actually Measures
| NPS | CSI | |
|---|---|---|
| What it asks | Would you recommend this dealership | How satisfied were you with this visit |
| Who administers it | The dealership or a third-party platform, at its own discretion | The OEM, on a fixed schedule tied to a sale or RO |
| Time horizon | Overall relationship, not one event | One specific transaction |
| Tied to incentives | Sometimes used internally, not OEM-mandated | Directly tied to manufacturer bonus and holdback programs |
| Scoring | Single 0-10 question, promoter minus detractor percentage | Multiple weighted questions, aggregated into a composite score |
A store can carry a strong CSI score on paper while its NPS drifts down, because CSI is anchored to how well one visit was executed and NPS is closer to a running average of every interaction a customer has had with the dealership, including ones that never generated a survey at all.
Where Phone Handling Shows Up in NPS
CSI captures the booking call because it is close in time to the visit being scored and the survey asks about scheduling directly. NPS has no such anchor. A customer answering the recommendation question is drawing on a longer memory: whether calls got returned, whether they had to call twice about the same issue, whether reaching someone by phone was ever actually easy.
Repeat call rate is a useful proxy here. A customer who had to call back about the same unresolved issue is unlikely to answer an NPS survey generously months later, even if the visit itself eventually went fine. The friction from the phone interaction outlasts the memory of the specific outcome.
CSI asks how one visit went. NPS asks whether the customer trusts the dealership enough to put their name behind a recommendation. Phone friction erodes the second one even when it doesn't show up in the first.
Service retention research backs this up. Why service customers stop returning covers the drop-off pattern directly, and the same friction points, unreturned calls, unclear scheduling, unmet callback promises, are the ones that show up as detractors on an NPS survey rather than as a low CSI question score, since CSI rarely asks about calls that never happened at all.
Why a Store Might Track Both
CSI is not optional for a franchise dealership. It is tied to manufacturer incentive payments and gets tracked regardless of whether the store wants to. NPS is a choice, and stores that add it are usually trying to see past the OEM survey's narrow window into the broader relationship, including customers who never generated a CSI-eligible transaction in the survey period.
The two scores are most useful read together. A dealership with high CSI and flat or declining NPS usually has a process that executes well once a customer is in the building, but loses ground somewhere before or after the visit, often in scheduling friction or a follow-up that didn't happen. Neither score on its own identifies where that gap is. Comparing them narrows the search.
Frequently Asked Questions
What is NPS at a car dealership? Net Promoter Score is a single-question survey metric that measures how likely a customer is to recommend the dealership to someone else, on a 0-10 scale, reported as the percentage of promoters minus the percentage of detractors.
How is NPS different from CSI at a dealership? NPS measures overall likelihood to recommend the dealership and is typically run at the dealership's own discretion. CSI measures satisfaction with one specific visit, is administered by the manufacturer on a fixed schedule, and is tied to OEM incentive payments.
Does phone handling affect NPS? Yes, though indirectly. NPS reflects the customer's overall impression of the relationship rather than one transaction, so unreturned calls, repeat calls about the same issue, and scheduling friction tend to lower NPS even when they never appear in a CSI survey question.
Is a good CSI score enough if NPS is declining? Not necessarily. A strong CSI score reflects that visits are executed well once a customer is in the building. A declining NPS alongside strong CSI usually points to friction before or after the visit, most often in scheduling or follow-up, that the CSI survey window doesn't capture.