“How does this compare to the ideal version of a product like it?”
From Claes Fornell et al. · University of Michigan; architects of the American Customer Satisfaction Index
Why it works
This is the third of the ACSI's three survey items, and the one that reaches highest. Where the expectations item asks whether the product cleared the bar the customer set, the ideal item asks how far it sits below the best imaginable product of its kind — the customer's own benchmark, not yours. That distinction matters: a product can meet modest expectations yet still be nowhere near ideal, and only by asking both do you separate 'good enough' from 'genuinely excellent'. Rated on a graded scale and combined with overall satisfaction and expectancy disconfirmation into a weighted index, this item is part of why the ACSI predicts loyalty and financial outcomes across industries. As with the rest of the index, the standardized wording is what makes the gap-to-ideal comparable across companies and over time.
When to ask
After the customer has used the product enough to judge it against what 'great' would look like in this category. The ideal is theirs to define; you're measuring the distance to it, so they need genuine experience of the real thing first.
Good follow-ups
- What would the ideal version do that this doesn't?
- What's the biggest gap between this and your ideal?
- Which existing product comes closest to that ideal, and why?
Watch out for
Treating the ideal as a fixed target you can engineer toward — it's the respondent's mental construct and it drifts upward as the category improves, so a stable score against a rising ideal is actually progress. Reading this item alone is the bigger trap: in isolation a 'far from ideal' rating looks like failure even when expectations were comfortably met, which is why it belongs beside the expectations item, not instead of it. And the gap-to-ideal is a sample-level statistic — one person's answer is a story, not a measurement.
Where to ask
- In-product surveygreat
The native habitat — fire it after real use, so the customer has a concrete experience to hold against their idea of the ideal. This is the third ACSI item, built to be surveyed.
- Long-form surveygreat
Travels cleanly in a relationship survey, especially next to its sibling items; the 'distance from ideal' scale stands on its own and the index only means something at sample size.
- User interviewworkable
A great prompt to surface what someone's ideal even looks like — but one rating is anecdote. The ACSI is a weighted index across a real sample, not a single person's gap-to-ideal.
- Support chatpoor
During a support exchange the customer is anchored on the current problem, not the product overall; a distance-from-ideal rating taken there reflects the open issue and pollutes the relationship-level index.
- Sales callpoor
Comparison to the ideal needs lived experience of the actual product. A prospect can describe an ideal but has no real performance to measure against it, so the answer is speculation.
Pairs well with
Stage: Get value · A question popularized by Claes Fornell et al.
Source: https://www.reginfo.gov/public/do/DownloadDocument?objectID=36702901