My Antara is the 163 Exclusive.I was a bit unhappy that there is no temperature gauge as this would have been useful when towing my caravan, however there is a solution
Look at the general area around the radio controls. Press the button marked " SETTINGS " and hold it in until your hear a bleep type sound. Then press the button marked " BC " twice and this will take you into the computer diagnostic screens. Press BC again and move onto the next screen and keep doing this and you will work through the screens
You can see engine coolant temperature ( mine runs at 80/81 degrees )and other info. One screen shows how many milli litres per second of diesel is being injected into the engine.
Its quite interesting if you like that sort of thing, and as you can tell, I do