Poor fuel economy on a Lexus IS - any ideas? | Ask Honest John

Poor fuel economy on a Lexus IS - any ideas?

Just bought a Lexus IS220d and I'm very dissapointed with the mpg, I'm only getting 24 mpg, but the official Lexus site says 35 mpg urban 55 extra urban 45 combined. What could be the problem?

Asked on 31 May 2012 by polskif

Answered by Honest John

First and easiest thing, dirty air filter. Next, injectors. Try some injector cleaner in the tank. Next, oxidising cat converter may be blocked. Expensive. Next new injectors. Very, very expensive.

Tags: fuel economy real mpg owning

Similar questions

Why does my Real MPG change from summer to winter?

Why do summer and winter mpg figures vary?

The mpg on my car's dash differs from my own fuel consumption calculations - is this unusual?

I have a Jaguar XE, nearly two years old, which averages around 39mpg on the computer set for long periods. 2000 miles ago I decided to check real mpg by checking fill-ups against mileage and was surprised...

I stopped using premium fuel and got a huge dip in fuel economy - what do you think caused this?

I have an Hyundai Ioniq, which I've run exclusively on Shell fuels for the 5000 miles that I've had it. I was getting 60-62 mpg on the regular stuff, then put a tank of the V-Power in and got 64 mpg. I...

Related models

Lexus IS (2005 - 2013)

Very well built. Top quality interior. Lexus dealers are best in the business. Impressive refinement. All engines chain cam. IS250 probably the most reliable car you can buy.