Mazda has introduced its first stop-start system, fitting it to the 2.0-litre petrol version of its lower medium 3 model.

It’s a significant move, because it takes the hatchback below 161g/km, which has capital allowance significance for both fleets buying outright or to the lease rate if that’s the route of choice.

The stop-start system cuts the 3’s emissions by 19% to 159g/km, putting it in the 19% benefit-in-kind tax band, and economy improves by 16% to 41.5mpg.

The 151hp 2.0-litre petrol engine is appealing, and Mazda hopes the emissions reductions will see some fleets turn back to petrol power.

The 3 is good looking, well-built and drives well, and for drivers looking for petrol power, the i-stop system is a welcome addition, especially given the car’s emissions band.

Mazda 3 2.0 Sport i-stop 5dr
P11D price £17,925
Model price range £14,730-£21,960
Fuel consumption 41.5mpg
CO2 (tax) 159g/km (19%)
BIK 20/40% per month £57/£114
Service interval 12,500mls
Insurance group 9
Warranty 3yrs/60,000mls
Boot space (min/max) 300/1360 litres
Engine size/power 1999cc/151hp
Top speed/0-62mph 128mph/10.4secs
On sale Summer 2009
Score 7/10
Verdict Desirable, with good
running costs.