They do run run RON

[C60three]

I like your thinking. Why not give it a try and report back on how (un)successful it is?

No, they are wise to that as the receipt states whether you used your club card. They will ask for it to deduct your points when they do the refund

 

[Mrhanky]

I normally fill up with Tesco M99, which takes a little planning so I dont go out of my way to fill up. I have tried Esso and Sainsbury premium fuel as well and couldnt tell the difference.

However yesterday the Tesco petrol station was closed all day, so I was forced (0 miles remaining) to stop at the rip off local BP garage. I bought their premium fuel and since the cars seems a little more perky and urgent. Probably placebo effect but first time I have ever noticed a difference in fuels.

I feel a test coming on...............

 

[markjay]

My most nervous "fuel anxiety" event was when driving in the boonies in the Spanish mountains in my wife's SLK in 2010.

We'd set off in the morning without enough fuel to reach our destination and intended to fill up in the last small town before heading into the (relatively speaking) wilderness. However, on reaching the expected fuel stop the filling station was quite obviously permanently closed and the only one we'd passed previously that morning was some 30-40 miles back. After examining the "Distance to Empty" on the display and a cursory look at the map to see roughly how much further the next vestiges of civilisation were, we duly set off.

Unfortunately, the road ahead proved to be not only very hilly (I knew that much from looking at the map), but also the road surface deteriorated to the point that it was both very uncomfortable and very unsafe to travel at much more than 25mph. Believe me when I say that SLK350's are incredibly uneconomical under those conditions, and with some alarm I watched the "Distance to Empty" value reduce at roughly three times the normal rate. Then the Low Fuel warning light came on.

While COMAND does list filling station POI's, the distance shown on the listing is as the crow flies which tends to be considerably shorter than the on-road distance when you're in mountainous territory. After much fiddling, I managed to find what seemed to be the closest filling station which purported to be around 40 miles away So off we went, very gently, hoping that we'd make it but my mental arithmetic was telling me I was in for something of a considerable walk in the not too distant future

You cannot imagine how pleased I was after around 25 miles driving to spot a filling station that wasn't on the POI list. There were just two litres left in the tank when I filled up :bannana: :bannana: :bannana:

Two petrol stations that closed down near us, are still showing on COMAND 2013 Maps... several years after they closed.

I would not recommend betting your bottom gallon on COMAND POI for filling station....

 

[Grovsie31]

Ive always felt its a load of ******** myself.

Ive used 95 ron, super and V-power, don't notice a difference at all.

I was told Jap imports need the best fuel made bugger all difference as well.

 

[Coolbiker]

Shell V power is always the fuel of choice.

If you cant afford it buy a family car.

 

[Optimus prime]

Shell V power is always the fuel of choice. If you cant afford it buy a family car.

What a typical crap reply !

 

[developer]

Ive always felt its a load of ******** myself.

Ive used 95 ron, super and V-power, don't notice a difference at all.

I was told Jap imports need the best fuel made bugger all difference as well.

I noticed on my fuel flap today it says 98RON.

On the basis that I don't think MB are getting a kick back from Shell for adding the label, I follow the instruction (it's in the manual too).

 

[stereophoney]

I tried for a couple of months using only premium and noticed no difference in performance or mpg in everyday driving. It runs quite happily on 95, and if there is a difference in imperceptible to me.

 

[developer]

I tried for a couple of months using only premium and noticed no difference in performance or mpg in everyday driving. It runs quite happily on 95, and if there is a difference in imperceptible to me.

Granted - I probably couldn't tell either, but there's a warning in my manual about engine damage, so that's good enough for me:

 

[Grovsie31]

Your manual also tells you to visit the nearest MB dealer to change a bulb.

 

[developer]

Your manual also tells you to visit the nearest MB dealer to change a bulb.

Yes, I can see why they would (unsuccessfully) try that - do you believe they specifically warn about only using 98RON for the same monetary reason?

If not, why do you think they include the advice?

 

[AMGeed]

As above. And what would MB have to gain by promoting the use of 98RON?

 

[E55BOF]

I've never noticed any difference between premium and ordinary fuels, on either my E55 and E55K, or the two turbocharged Saabs (9000 and 9-5 Aeros) before them. I fill up with the good stuff whenever possible, though - V-Power or Tesco Momentum - on the basis that it doesn't cost much extra, and is likely to have the best available additive package.

 

[Bobby Dazzler]

I tried for a couple of months using only premium and noticed no difference in performance or mpg in everyday driving. It runs quite happily on 95, and if there is a difference in imperceptible to me.

The 32K engine is designed for 95 RON fuel but will adjust if higher octane fuel is used to produce more power, but that may not be noticeable on the road. Likewise it will adjust if lower octane fuel is used to protect itself from detonation, and the reduction in power may be more noticeable.

For the 63NA engine the same statements are true, but designed for 98 RON.