BMW’s never one to rest on its laurels. After listening carefully to customer feedback, the car manufacturer has finely honed its popular 3 Series range. And the result is the latest evolution of the 320d. Saloon or estate, this 2.0-litre diesel is an executive dream – offering a cocktail of power, comfort, low CO2 rating and impressive economy. This could prove the perfect car for high-mileage drivers.On the road, the 3 Series has always been well mannered rather than thrilling. Its compact, well-balanced proportions and sporty rear wheel drive mean the 320d is precise, responsive and rewarding. However, on the days when getting from A to B as smoothly and painlessly as possible is paramount, the BMW instantly goes on its very best behavior and delivers stress-free motoring.For the high-mileage driver, BMW’s pleasing mix of refinement, comfort and nearly 60mpg is a tempting combination almost too good to turn down.