BATTERY problems were the most frequent cause of fleet vehicle breakdowns attended by RAC patrols last year. Of the 2.4 million breakdowns attended to, almost 370,000 (15% of the total) were caused by batteries, twice the number of the second most common cause - tyre punctures.

RAC Business Services managing director Gary Spellins said: 'Despite winter conditions which put much strain on batteries, fleet drivers caused themselves and their colleagues unnecessary problems by leaving their lights switched on. 10,000 motorists in general drained their batteries that way.'

The RAC fleet drivers' breakdown top 10 is: 1. Battery problems. 2. Punctured tyres requiring wheel changes. 3. Other tyre problems. 4. Breakdown following a road accident. 5. Alternator problems. 6. No fault apparent on RAC patrol's arrival. 7. Lock out (keys left in car. 8. Engine problems. 9. Cambelt problems. 10. Starter motor problems.