What is the exposure gap?
The exposure gap is a single figure: a brand's relevance score minus its trust score. Relevance measures whether a brand is part of today's conversation – what people follow, share, and talk about. Trust measures whether people believe in the brand underneath that noise.
A negative gap means trust runs ahead of relevance. The brand has banked more credibility than attention, and that surplus acts as a buffer. A positive gap means relevance runs ahead of trust: the brand holds more attention than it has earned belief to support. That's the exposure. The gap predicts whether growth is durable, so it reads a brand's direction that a single composite score hides.
How CarMax and Carvana split
On the two dimensions that decide durability, the used-car rivals separate cleanly:
CarMax sits at −4.6. Its trust is the buffer: more people believe in it than currently talk about it, so when attention arrives there is credibility waiting to catch it. Carvana sits at +1.2. Its relevance is the spike: more people talk about it than have settled into belief, so when the conversation moves on there is less underneath to hold the position. The composite score treats these two brands as equals. The exposure gap shows one is compounding and one is exposed.
Why does trust outlast relevance?
Relevance is volatile. It climbs on a campaign, a product launch, or a viral moment, and it falls just as fast when the moment passes. Spend it and it is gone.
Trust behaves differently. It builds slowly and, once banked, it holds. Trust is the dimension that carries a brand through a weak quarter or a public crisis, because people extend credit to brands they already believe in. This is why the direction of the gap matters more than either score in isolation. Two brands at an identical composite can move in opposite directions – one compounding trust, the other spending relevance it cannot easily replace. The gap names that difference before it shows up in revenue.
What the exposure gap changes
The exposure gap changes what a strong score means. A brand leading on relevance with a positive gap looks healthy right up until the attention fades. A brand with a negative gap can look quieter and prove far more durable. Read the composite alone and CarMax and Carvana are a tie. Read the gap and one of them is building a buffer the other doesn't have. That is the decision the average was hiding – and the reason a durability read belongs next to every brand health number.
Frequently asked questions
What is the exposure gap? The exposure gap is a brand's relevance score minus its trust score, measured on QuestRQ. A negative gap means trust exceeds relevance, indicating durability. A positive gap means relevance exceeds trust, indicating fragility. It reveals whether a brand's growth rests on banked credibility or on attention that can fade.
Is a negative exposure gap good or bad? A negative exposure gap is a positive signal. It means a brand has banked more trust than relevance, giving it a credibility buffer. CarMax's −4.6 gap shows trust running ahead of attention, so incoming interest meets earned belief rather than outpacing it.
Why does trust matter more than relevance for brand durability? Trust builds slowly and holds once earned, carrying a brand through weak quarters and crises. Relevance is volatile: it spikes on campaigns and viral moments, then fades. A brand spending relevance without banking trust grows on a signal it cannot replace, which is why trust is the more durable asset.
How is the exposure gap different from a composite brand score? A composite score averages dimensions together, so two brands can post identical totals while moving in opposite directions. The exposure gap separates trust from relevance and reads the distance between them, surfacing durability or fragility that the average conceals.
Want the full framework for reading durability in your own brand? Get in touch.
About the research
Trust and relevance figures are drawn from QuestRQ, HarrisQuest's institutional reputation platform. The exposure gap is calculated as relevance minus trust; a negative gap indicates durability, a positive gap indicates fragility. Figures reflect the A18+ familiar base, N=2,292, with trust and relevance scored on a 0–100 composite.
