Well apologies if this review might not help to its best as I am going to share my experience of driving the BMW 3 series (6 speed manual transmission) (2006 model Saloon 320i ES petrol version 2000cc) in London (courtesy car rental co. nationacarrental, alamo.com).
The BMW 3 is an awesome piece of engineering in its class for a decent price in the UK. Ultimate interiors at its perfection (std. version). Very good space in the front and rear. Its exterior is also equal eye catching feature. Though you cannot expect the total royalty of the 7 series or a Merc but it is at its best.
The driving experience is a great feel like gliding on the cloud (on UK roads). Exceptional Handling and road grip in wet weather due its wide wheel base and steering capability (with 16" alloys). Ultimate power with 0-62 in 10 seconds.
Excellent cruise control (press of a button you dont have to use the accelerator and the car drives on its own (preferred for long drives to make the drive comfortable)) and onboard computer system showing you the average fuel consumption and avg. speed are really a piece of technology for this class of car.
Its leather interiors are good makes you feel that you are inside an expensive car but not at its best
Its got a huge luggage space arm rests for driver and pillion driver.
The fuel consumption (milage as pronounced in India) on UK roads was 17 Km/liter(Petrol) in the car we rented. so in India it might be about 10-12 km/liter (self assumption by myself).
Overall its a very good car for its performance and Brand value and its customer service.
You can the same feel in a Skoda or Honda civic
Please remember the above comments are for BMW 3 Series on the UK roads and its UK specifications. The above mentioned remarks might be different for an indian sold BMW 3 series.
Praveen