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The brand identity–image gap is a well-known marketing field. However, very little academic work has been done within the wine industry regarding collective brands. With the aim of filling this gap, this paper analyzes and describes the relationship between identity and the image of Bordeaux wines. It is intended as a collective wine brand.

From a positivist–functionalist perspective, a 45-question survey has been administered online to N = 53 internal brand operators (winery owners or managers) and to N = 655 external consumers (mainly focusing on 18–25 year-old segment). Nonprobabilistic sampling techniques have been used. Questions were structured within a semantic opposition.

Data analysis has shown that the nine-dimension model (physical, personality, culture, self-image, reflection, relationship, positioning, vision and heritage) is capable of collecting a richer and more pertinent set of information concerning the brand identity; statistically significant gaps have been found in 25 out of 45 items; counterintuitively, the consumers have a very different opinion about the brand compared with existing ideas. Direct implications are that internal brand operators may suffer from imposter syndrome; information asymmetry may play a central role in brand perception; and the brand lacks symbolic and inspirational functions.

Providing an original model to analyze and evaluate the brand identity–image gap, specifically adapted for collective wine brands, this work contributes to the literature by increasing the knowledge about brand identity issues.

Given the lack of consensus among wine experts, this paper aims to examine whether this implies they make systematic mistakes or is an expression of their idiosyncratic preferences.

Grade equations are estimated for five famous wine-experts and a panel of 62 Bordeaux fine wines over the period 2003-2011. The appellation of origin is considered a measure of the typical taste of the wines. The authors control for objective factors, thanks to weather variables and the ranking of each wine.

Ratings vary among experts, such that some statistically significantly favour wines produced in specific areas, indicating their taste preferences. Thus, preferences matter in expert ratings and would seem to suggest a continental variance. The finding explains the lack of consensus in this opinion market.

The lack of consensus among wine experts should not necessarily be viewed as market inefficiency. If consumers find the “right expert” reflecting their own tastes, as in the case of cultural goods, they may not necessarily experience a welfare loss due to expert opinion heterogeneity.

This paper contributes to renewing the debate on expert accuracy, considering wine as a cultural good and introducing preferences into the analysis. The authors develop the concept according to which existing differences in the personal tastes of the experts can facilitate consumer search.