fuel economy and emissions

On my new Jaguar E-Pace, the stop-start system only turns the engine off for a maximum of 16 seconds; do you think this acceptable?

R Hill

What is the most economical 1.4 petrol or diesel car in Ireland, max 2015?

My 2004 BMW X3 has a serious problem of high fuel consumption; it uses one litre to drive a four-kilometre distance; what could be the cause?

Does the Hyundai Kona CRDi 136 DCT meet the Euro 6 emissions zone for inner London?

How much would it cost in an Opel Mokka diesel to travel 201km four days week?

My BMW X3 2.5 has high fuel consumption; 15 litres takes me a distance of 100km. What could be the cause of such highs?

Toyota Prius (2006): what do you think? A credible option or just a little bit of a gimmick?

Im confused as to what's the best economical hatchback car. I want to buy a used car between the years 2006 and 2008. I'm currently spending €110 a week on petrol in a 1.4-litre For Focus.

Any advice?

What is the best MPV for tax and fuel efficiency?

What are the more fuel efficient nearly new, small or medium sized family cars you can get for around the €15,000 mark?