Over 95% of UK fleet decision makers are worried about the implications from VW Group's emissions test scandal extending to the UK, according to Sewells Research and Insight.

A further 81% expect there to be implications for the UK fleet market.

More than 300 fleet decision makers in the UK took part in the survey immediately following the news of the scandal on Monday.

Results show the news of Volkswagen’s “defeat device” and resulting investigations could have dramatic implications for the market.

More than two thirds (68%) of fleet decision makers believe cars in the UK will be affected and a large number (61%) will expect reimbursement for any resulting recalls in the UK. Martin Winterkorn, Volkswagen Group chief executive, has already resigned amid the NOx emissions bypassing scandal.

Key among these issues is the trust fleet operators place in manufacturers.

Responsible for 2.3 million car registrations in the UK, fleets are among the most powerful and important buyers in the UK car market.

They rely on manufacturer claims when making car purchase business decisions. Of the 2.3 million company cars in the UK, 81% currently run on diesel, according to data from HMRC.

Fleet decision makers place great importance on emissions figures, with 90% considering CO2 emissions important and 64% considering NOx emissions important when adding new cars to choice lists.

Furthermore, 84% look to manufacturers to cut NOx emissions in their diesel cars.

More than half (54%) of respondents said they are less likely to trust claims made by manufacturers in future. The impact on the VW Group was even more fundamental, with 62% stating they are less likely to trust the manufacturer’s claims.

Of those currently operating VW Group models on their fleet, half (49%) claim they are potentially looking to review VW Group’s position on their fleet’s choice lists.

Three in every four (73%) are looking for reassurance from the VW Group that vehicles on fleet are not affected. Two thirds of all respondents (67%) are now looking to all manufacturers that respective models on their fleet are not affected.

Simon Staplehurst, head of commercial insight at Sewells Research, said; “Fleet operators have a right to ask serious questions of manufacturers when news like this emerges.

"It’s hard to exaggerate just how important fleets are to manufacturers and how important diesel is to this market. Fleet managers make critical business purchasing decisions on manufacturer claims when it comes to fleets and trust is the bedrock of these relationships and choices.”