BMW is making changes to its line up including the introduction of all-wheel-drive versions of the 3 Series estate and the 1 Series hatchback.

From March the xDrive powertrain will be available on five types of 3 Series Touring models and on the 120d sports hatch.

The new estate models will join the new 320d and 330d saloons which have just gone on sale with four wheel drive.

Prices for the new estates - which will compete with the likes of Audi's A4 avant quattro and the Subaru Legacy Tourer - will run from £29,030 for the 320i petrol engined xDrive Tourer to £36,545 for the diesel 330d.

The 120d xDrive, which BMW says will have a top speed of 140mph and average more than 60mpg, will cost from £25,190.

BMW is also bolstering the 3 Series Tourer range with four new engines including fuel efficient 320d EfficientDynamics versions which are said to average 65.7mpg with CO2 emissions cut to 112g/km.

The EfficientDynamics model is priced from £29,710 while there is also a new entry level 316i Tourer powered by a four cylinder 1.6-litre turbo petrol engine developing 136hp,

Top speed for the 316i is a claimed 130mph with a 0 to 60 acceleration time of 9.4 seconds and fuel consumption of 45.6mpg on the combined cycle with a CO2 figure of 143g/km. It is priced from £26,495 as a six-speed manual although an eight-speed auto version will also be available.

Other changes to the 1 Series see emissions on the 116i cut to 125g/km from 132 reducing company car taxation to 16 per cent while the 116d has its CO2 rating reduced to 109g/km in both manual and automatic formats - a tax saving drop of eight and 10g/km respectively.

BMW is also introducing a petrol engined version of the X1 compact SUV. The new X1 20i will use a two-litre turbo engine giving it a 0 to 60 time of 7.4 seconds with emissions of 157g/km when paired with the eight-speed auto box.

The X1 20i will cost from £25,450 and will be joined by a new entry level X1 16d priced from £23,930.

To complete the revisions BMW is offering style packs including 18-inch alloys and special leather trims on the 1 Series coupe and convertible M Series vehicles as well as new sat nav systems with improved 3D graphics and additional route displays.

The new navigation equipment will feature on all versions of the 1 Series and on the X3 and 6 Series models.