Better Mileage Audi A6

[John Larson]

On 11:59 AM, Tony Escobedo wrote:
> Hello everyone,
>
> I have a 2000 Audi a6 2.8 that currently is getting 16.4 mpg. It has to do better than this. The car is great!! And has 176,000 miles and original MAF sensor and all 4 oxygen sensors. I want to change all 5 sensors and hope the mileage gets better. I also already changed the plugs and wires to help. I also was hoping to empty the cats for some better airflow.(I did this to my 1993 90cs v6 and it sounded great, but didn't pay attention to the mileage then). Does anyone have any thoughts or advice on this??
>
>   		 	   		
If the CEL isn't on, the sensors are performing within their established 
(mandated?) parameters.  While you 'might' see some small mileage 
improvement with new ones, it's unlikely it will be much.  Gutting the 
cats serves no purpose, and will add noise and CEL related issues, 
besides being illegal.  IMO, as a professional tech dealing day in and 
day out with driveability issues, you have an operator related problem.  
My '95 A6 (close to 300K!) gets 20-24 in mixed and highway driving, but 
we are somewhat mindful of the way we drive, and it goes away when it's 
used strictly around town.  WAY away.  If you take a longish highway 
trip, what kind of mileage to you get?

John