Which Polo-sized car offers better fuel economy?

My wife currently runs a 2004 Volkswagen Polo 1.4 Twist. Her annual mileage is about 3000 - 4000 made up of fairly short journeys of up to 20 miles. She is always complaining about the fuel economy (currently about 40mpg). Could you recommend a vehicle with four side doors as a suitable replacement to the Polo that would give a better mileage? The car is well maintained with tyres kept at the correct pressure.

Asked on 19 May 2012 by PB, Fordingbridge

Answered by Honest John
That's about the best she can expect with this sort of usage. Fuel economy will be worse in winter because the engine takes longer on enriched mixture to reach full working temperature. A diesel will be entirely unsuitable because this type of use will not allow the diesel particulate filter to regenerate. A small petrol turbo might be best (eg Polo 1.2TSI), because the water-cooled turbo in the exhaust manifold acts as a heat exchanger and warms the engine up quickly.
Similar questions
On 8 August 2010 I wrote to you as I was thinking of changing my car and was wondering whether Volkswagen had any plans to sell the Polo diesel fitted with their 105PS 1.6 engine. I had tried the car with...
I have owned diesel Peugeots (309/306) for around 25 years and found them brilliant, doing 18-20,000 miles a year. Having now retired, my mileage is down to about 6000 a year, most of which are 20-30 mile...
I rather fancy an XF Jag. All the information on your site and elsewhere seems to concentrate on the diesel version. As I only potter around doing, say, 5000 miles a year, a diesel seems a bit problematic....
Related models
Neatly styled and easy to drive. Room for five. Most come with full size spare. High quality interior. Double folding rear seats give flat load area. Frugal 1.2 TDI BlueMotion.
 

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 12% on GAP Insurance

Use HJ21 to save on an ALA policy

See offer