According to new figures, a diesel fleet of 171-180g/km will save £10,400 in fuel in 20,000 miles over one averaging 181-190g/km.
Similarly spectacular savings are available by making the fleet cleaner at most levels (see table below).
The figures have been worked out by Lex Vehicle Leasing, through its Momentum fleet management consultancy team.
Lex believes it is the first company to publish its own mpg/CO2 emission tables to help identify potential cost savings for its customers.
Momentum developed the tables as part of its annual Milestone fleet Healthcheck programme.
The Healthcheck reviews all elements of a fleet in detail and then makes recommendations for improvements and how they should be adopted. Lex Momentum’s associate director, Gerard Gornall, said: ‘Too many companies do not realise the level of savings that can be achieved by relatively small reductions in CO2 emissions.
‘Our analysis of the relationship between CO2 and mpg makes for interesting reading and is a win-win for companies – they reduce their emissions and their fuel bills.’
Lex added that another key aspect of reducing CO2 emissions is the positive impact it has on reducing Class 1 National Insurance contributions, which are based on the CO2 emissions of individual vehicles.
The impact of reducing the average tax band on the same customer’s fleet by one level will reduce its annual NIC bill by 5%.
|CO2 banding||Average mpg||Cost per||CO2 banding||Average mpg||Cost per|
|10,000 miles (£)*||10,000 miles (£)*|
*Figures have been worked out using the following fuel costs Diesel 86.9ppl, Petrol 82.9ppl