Quantcast
Is your car your pride and joy, or are you ready for a change? Let us know and you could win a £300 John Lewis voucher | No thanks
Ask a Question

Why does my Real MPG change from summer to winter?

Why do summer and winter mpg figures vary?

Asked on 24 October 2017 by george everitt

Answered by Honest John
Because engines are colder when first started in winter and take longer to reach operating temperature during which period they run at an enriched mixture and therefore use more fuel. This is felt most on cars used for short distances. On long runs of 100 miles or more there is very little actual difference.
Similar questions
I have the new Skoda Karoq 1.0 DSG. It's a lovely little car that drives well, even the DSG is amazing. However, I've done around 1200 miles and I can't get above 30mpg. The dealer said it's going to get...
Why is my fuel economy 7mpg less in winter? Since the weather has got colder, my fuel economy has got a lot worse. From an average of 43mpg in summer, I’m now only getting 36mpg. Apparently it shouldn’t...
My Vauxhall Astra 2004 1.6-litre won't start from cold when the outside air temperature is below 6-7 degrees. In the past two days of very mild weather, the car has fired up fine but at the beginning of...
 

Ask Honest John

Value my car

Amount to borrow
Sorry. The minimum loan amount is £1000
To pay back over

My credit score

Best available rate 9.20%

Total repayment £9,304.93

Total cost of credit £1,804.93

£155.08

60 monthly payments

Apply now

Representative example

The Representative APR is 13.2% (fixed) so if you borrow £7,500 over 4 years at a rate of 13.2% p.a (fixed) you will repay £199.21 per month and repay £9562.20 in total.