About 56% of respondents to a recent LeasePlan survey agreed that financial jargon has left them feeling more confused than before they started the conversation.
Nearly 40% said they had dropped the purchase or product as a result of not understanding the abbreviations.
An Autoglass survey of 250 British fleet managers found worries about the cost of fuel and service and maintenance are at similar levels to a previous survey in 2014 but concerns about CO2 emissions have jumped from 12th place on the list of issues in 2014 to third in 2016.
Concerns about tax and regulation have also increased in response to changes in company car taxation from April 2017 and other measures, aimed at increasing the uptake of Ultra Low Emissions Vehicles in the UK.