Terraclean

[AceCobra1]

I am curious, how many MPGs are you guys averaging on your 640Ds ?

Mine is a 12 plate with 47k miles and I do mostly motorway driving on Comfort+/ Eco Pro - and as my friend said, I drive like a granny

However, I am getting 30.3 MPG

I thought the quoted figures were 50 MPG but to get 30 MPG from motorway driving seems odd.

Do you think Terraclean can help clean those carbon deposits and improve the mpg ? How about cataclean ?

[Scottiedog]

Never tried it myself but have heard good things re performance/pickup and improved mpg. That does sound low to me though. I did a 45 mile trip on sat all motorway and got 46mpg traveling at 70mph for reference.

[AceCobra1]

Originally Posted by Scottiedog

Never tried it myself but have heard good things re performance/pickup and improved mpg. That does sound low to me though. I did a 45 mile trip on sat all motorway and got 46mpg traveling at 70mph for reference.

45 is really good. I think average is about 40 mpg

[chris.t]

I'm averaging 43mpg on my 35mile commute to work thats just normal driving sitting at 60mph with a few overtakes here and there.

[Coops395]

I get 30-33 and my foot is like lead.. remapped too. Between 450-500 miles out of a full tank when I'm on a run.

[AceCobra1]

So any ideas if terraclean works for diesel cars ?

[Coops395]

I have a 2014 640d and it currently sits at 46k mileage wise. Had it from new as was my previous 640d and never had an issue with the same kind of mileage achieving 40-50 mpg if I drove normally. You didn't mention how long you have had the car, if the previous owner very rarely used full throttle and neither do you there could be an issue that terraclean may be able to rectify although from their website the testimonials are from individuals who have had their cars for many years with high mileage.

I think before you try it though, get it checked at a main dealer to make sure everything is running as it should, because with the mpg you are getting from the way you are driving it something doesn't seem right.

[Mikester30]

Im getting 33mpg at the moment, its just too tempting to feel that torque.

[F30Andy]

Originally Posted by Coops395

I get 30-33 and my foot is like lead.. remapped too. Between 450-500 miles out of a full tank when I'm on a run.

+1. I get around the same with a superchips EPC box installed.

If I am driving nicely I can get around 10mpg more.

[6coupe]

I'm getting 24mpg driving on congested city roads, 3miles each way, so car barely warms up by the time I arrive. I ensure to put my foot down when I can too.

[AceCobra1]

Originally Posted by Coops395

I have a 2014 640d and it currently sits at 46k mileage wise. Had it from new as was my previous 640d and never had an issue with the same kind of mileage achieving 40-50 mpg if I drove normally. You didn't mention how long you have had the car, if the previous owner very rarely used full throttle and neither do you there could be an issue that terraclean may be able to rectify although from their website the testimonials are from individuals who have had their cars for many years with high mileage.

I think before you try it though, get it checked at a main dealer to make sure everything is running as it should, because with the mpg you are getting from the way you are driving it something doesn't seem right.

Car is 48k miles. Previous owner also did mostly motorway miles as well so I would assume not drive like a barryboy

[DTP1980]

Originally Posted by 6coupe

I'm getting 24mpg driving on congested city roads, 3miles each way, so car barely warms up by the time I arrive. I ensure to put my foot down when I can too.

Guaranteed way of ruining a Diesel engine I'm afraid. Diesels need nice runs at full temp for best combustion and correct operation of the DPF which you absolutely do not want to replace (cost). Petrol and hybrid best for short runs like that I'm afraid.