The BMW F31 models that have both digital speedometers and large navigation displays are typically the higher trim levels such as the 340i, 330i, and 328i. These models often come equipped with the Technology Package or Navigation Package, which includes features like a larger navigation display and a digital speedometer. These packages are optional upgrades on some F31 models, so it's important to check the specific features included in each trim level before making a purchase. **

Yes, the F31 320d does have an AdBlue system. AdBlue is a fluid used in Selective Catalytic Reduction (SCR) systems to reduce harmful emissions from diesel engines. The AdBlue system in the F31 320d helps to meet stringent emission standards by converting nitrogen oxides into harmless nitrogen and water vapor. Drivers of the F31 320d will need to periodically refill the AdBlue tank to ensure the system functions properly. **

The BMW F31 is equipped with a range of engines depending on the specific model and trim level. Some of the engine options available for the BMW F31 include a 2.0-liter turbocharged inline-4 engine, a 3.0-liter turbocharged inline-6 engine, and a 2.0-liter diesel engine. These engines are known for their performance, efficiency, and smooth power delivery, making the BMW F31 a popular choice among enthusiasts and luxury car buyers. **

The designations F30, F31, E90, etc. are used by BMW to identify different generations and body styles of their vehicles. The letter "F" typically refers to the current generation of BMW vehicles, while "E" refers to the previous generation. The numbers following the letter represent different body styles within that generation, such as sedan (F30), wagon (F31), or coupe (E90). These designations help to differentiate between different models and body styles within the BMW lineup. **

The BMW F31 is equipped with a rear-wheel drive system, which means that the power from the engine is primarily sent to the rear wheels. This configuration is known for providing better handling and balance, especially in performance driving situations. However, some models of the F31 also offer an all-wheel drive system, known as xDrive, which can provide better traction and stability in various road conditions. Overall, the drive system of the BMW F31 offers a dynamic driving experience with different options to suit the driver's preferences and needs. **

As an AI language model, I do not have personal experience with specific car models. However, the BMW F31 320d is a popular choice among BMW enthusiasts for its combination of performance, fuel efficiency, and practicality. It is known for its smooth and powerful diesel engine, comfortable ride, and well-crafted interior. Owners often praise its handling and overall driving experience. It's always a good idea to research and test drive a car before making a purchase to see if it meets your specific needs and preferences. **

The cost of insurance for a BMW 318d F31 can vary depending on several factors such as the driver's age, driving history, location, and the specific insurance provider. Generally, insuring a BMW 318d F31 may be more expensive compared to insuring a smaller or less powerful vehicle due to the higher value and performance of the car. It is recommended to obtain quotes from multiple insurance companies to compare prices and find the best coverage at a reasonable cost. **

The alarm system of the BMW 320d F31 works by monitoring various sensors placed around the vehicle, such as the doors, hood, and trunk. If any unauthorized entry or movement is detected, the system triggers a loud siren and flashes the lights to alert the owner and scare off potential thieves. The alarm can be armed and disarmed using the key fob or the central locking button inside the car. Additionally, the system is integrated with the car's immobilizer, making it more difficult for thieves to steal the vehicle. **