New trim packages for four BMW ranges
BMW says the upgrade, called 'Edition', offers greater colour choices and interior options, as well as more equipment.
The upgrade applies to 116i and 118d ES 1 Series models, and costs £250 over the standard ES model, but brings £1340-worth of equipment.
For your money, you get 17-inch alloy wheels, sports seats in an upgraded cloth, multifunction steering wheel and front foglights.
You can buy the Edition upgrade to all four-cylinder 3 Series saloon and Touring models in ES, SE or M Sport guises.
In Edition ES and SE models, the upgrade costs £750 more than the standard car, but you get around £3000 of extra equipment, BMW says.
That includes a choice of Carbon Black, Titanium Silver or Sparkling Graphite colours, as well as leather upholstery and brushed aluminium interior trim. You also get 17-inch alloy wheels and a multifunction leather steering wheel.
Edition M Sport buyers can have the same colours and leather upholstery, but they also get a satellite-navigation system, Bluetooth telephone connectivity and BMW's new ConnectedDrive Online and Assist telematics package as standard.
M Sport models with the upgrade costs £1000 more than the standard car, but offer £3100-worth of equipment.
For £350, buyers of 520d saloon and Touring models can get a satellite-navigation system worth £1365, as well as a six-CD changer worth £295.
The Edition upgrade is available on 2.0i Exclusive and Sport models.
Edition Exclusive models come in a range of colours - Sapphire Black, Stratus Grey, Space Grey, Titan Silver or Montego Blue, and there are also 17-inch alloy wheels.
In the cabin, there's full leather upholstery and a high-gloss Piano Black interior trim.
There is said to be £1835-worth of extra equipment in Edition Exclusive cars for a £1045 premium over the standard Exclusive car.
Edition Sport buyers can expect the same exterior colour choices, but there are 18-inch alloy wheels and leather-covered sports seats. It costs £775 more than the standard Sport model, but adds about £2500 of options to the car.
All edition models will begin production in March.