The turn radius indicates the smallest circular turn a car can make. With a smaller turn radius it is easier to perform a U-turn in one attempt instead of having to reverse back and forth in order to turn around.
The drivetrain warranty covers parts of the car, such as the engine, transmission, driveshaft, etc. Typically longer than the basic warranty, it lasts for a certain number of years.
Front-wheel drive is the most common type of drivetrain and offers several advantages. It is cheaper to manufacture (reducing the cost of the vehicle) and also lighter which helps improve fuel economy. Due to having the weight of the engine over the drive wheels it also benefits from increased traction.
This allows all four wheels to move up and down independently, providing a smoother ride when, for example, going over bumps in the road.
The basic warranty of a car covers all aspects other than parts which are subject to normal wear and tear, such as windscreen wipers and brake pads. It lasts either a certain number of years or amount of kilometres driven.
A petrol (gasoline) engine offers several advantages over diesel. For example the engines tend to be lighter and cheaper than their diesel counterparts. Petrol engines also tend to have higher horsepower, and the fuel is more readily available.