Most dealerships spend their energy on the wording of a review request — the script at the counter, the phrasing of a follow-up text, whether to say "review" or "feedback." Wording matters, but it's not what moves the needle most. The research on this is surprisingly consistent: when you ask determines the response rate far more than how you ask.
The catch is that "when" isn't the same answer for every kind of review request. Dealerships are actually running two different asks that follow two different rules — and conflating them is where most review strategies quietly underperform.
Two different asks, two different rules
There's the on-site ask — a kiosk, a tablet, a staff member capturing a testimonial while the customer is still physically in the building. And there's the follow-up ask — an email or text sent after the customer has driven off the lot, requesting a public Google or Facebook review. These feel like the same task with two different delivery methods. They aren't, and the timing research that applies to one doesn't transfer cleanly to the other.
What the research says about follow-up requests
For the classic "email or text a few days later" review ask, the common intuition — strike while the iron's hot, ask the very next day — turns out to be wrong. Academic research on review-request timing (published in Harvard Business Review, studying timing intervals from next-day out to roughly two weeks) found that requests sent the day after a purchase or service visit consistently produced lower response rates than requests delayed by roughly a week to ten days. Separate industry data from post-purchase review platforms points to a similar window — commonly somewhere in the 3-to-9-day range after the customer has had a chance to actually form an opinion.
The likely reason: a next-day ask arrives before the customer has finished processing the experience, and it can read as transactional or premature — closer to spam than a genuine request. Waiting lets the request land once the experience has settled into an actual opinion worth sharing.
None of this research says "wait as long as possible." Response rates decline steadily with time regardless of whether a reminder is sent — the finding is specifically that a moderate delay (roughly a week, not a day, and not a month) outperforms an immediate ask for follow-up requests sent after the customer has left.
Why the on-site ask breaks that rule entirely
Here's what makes a dealership's kiosk model different from the email-review research above: that whole body of research exists because most businesses have no choice but to ask after the fact. An e-commerce retailer can't hand a customer a camera at the moment of delivery — the ask has to travel through an inbox days later, competing with everything else in that person's life.
A dealership doesn't have that constraint. The customer is standing in the showroom or the service bay, in the exact moment their satisfaction peaks — paperwork done, keys in hand, or car freshly serviced and running well. Capturing a testimonial right there doesn't fight the timing-decay curve the research describes, because there's no delay for decay to work against. It sidesteps the entire problem the follow-up-email research is trying to solve.
A practical two-track timeline
Most dealerships benefit from running both motions, on two different clocks:
On-site video capture
At delivery or pickup, while the customer is still in the building. This is the single highest-response opportunity you'll get — it isn't competing with an inbox or a commute, it's built into the visit itself.
Public review follow-up (optional second track)
If you also want a written Google review, send that request roughly a week out — inside the window the research points to, after the visit but before the experience has faded from memory.
Diminishing returns
Response likelihood keeps falling the longer you wait. If a customer hasn't responded by here, a single light follow-up is reasonable — repeated asks past this point tend to annoy more than they convert.
What not to do
- Don't stack requests across channels within 48 hours. A text and an email and a follow-up call in the same window reads as pressure, not genuine interest in feedback.
- Don't assume you can "catch them later" for video. Once a customer leaves the lot, the emotional peak that makes an on-site testimonial compelling is gone — you're now competing with the follow-up-email decay curve for something that used to be free.
- Don't confuse "ask sooner" with "ask immediately" for the follow-up track. Sooner-but-not-instant is the actual finding — the day-after ask is the specific timing that underperforms, not any early timing at all.
Wording optimization gets most of the attention because it's the part a dealership can iterate on in an afternoon. Timing does more of the actual work — and for the in-person video ask specifically, the answer isn't a clever delay formula. It's simply: capture it now, while they're still standing there.
Timing research cited here reflects commonly published academic and industry findings on review-request response rates; exact figures vary by study, product category, and customer base, and should be treated as directional guidance rather than a fixed rule.