Guys

 

6 weeks ago I bought a 60 plate Renault Grand Scenic 1.5 DCi, the trip is showing 38.7 mpg. The 08 plate one that was traded in was returning nearly 50 mpg, with a few miles to and from the motorway and the bulk of its daily journey sat at between 50 and 60 on the motorway as her indoors doesnt break the limit.

 

I was sold the car on the presumption that the dealer was puting money in my pocket, 39 mpg is costing me money, its booked in to get checked next Thursday but I know before it goes they will say there is nothing wrong with it.

 

Anyone else had similar issues, I have registered with a Scenic forum and there are quite a few people complaining about similar returns.

 

I know to be more efficient in what comes out the exhaust the car burns more fuel, logic being there somewhere but 10 mpg worse off, not for me, have told them if its not improved the car will be returned to them.

 

Anyone else had similar issues with a newer Renault?

 

Cheers John

Ive got a mate that works at Renault. I'll ask him.

Cheers

this cold weather makes Diesel MPG drop by 3>7mpg

 

then all so does depend on how your driving it as well compared to the older car

 

are you just reading the fuel taco that tells you your mpg or have you worked it out manually

 

check to see what tyres are on there and at the right pressure

and give the car a good service oil/filter's

 

Mark

Mark

 

Car is doing exactly the same runs, mpg on the old car stayed steady winter/summer, car doesnt idle as with cost of fuel its switched off instantly, tyre pressures all to spec, a manual check is next on the cards, but we are using more fuel as the car is getting filled more regularly. What I would say is both cars allegedly had the same bhp but the newer one is a lot quicker off the mark. As for servicing it it was allegedly serviced before I got it but with dealers who knows.

 

Its booked into the dealer next week to get checked, lol I told the salesman its coming back if its not rectified so will wait and see what Thursday holds.

 

Cheers John

ARRRGH ... that's what I bought - Get rid of it.

 

I came home from work on Monday on a flatbed courtesy of the AA on Monday and had to drive the Z 100 miles a day to work and back every day since. It now needs to go for specialist diagnostics because is an intermittent fault with one of the fuel pumps? Blinking thing drives fine now..... until it feels like going into limp mode or not starting at all. I'll say again, GET RID! :)

ok, not a newer scenic but mines a 10 yr old Grand Espace.

 

The last 2 'Scenics' Ive had plenty of problems with too. My 96' Scenic faired very well in my only accident caused by me parked up on the verge of a country road due to the engine crapping out and a LOT of black smoke coming out the exhaust......I mean faired well that we were alive, but the sunroofs MET, wheels bent in half and the boot totally GONE lol. There were fire trails up that grass verge 5 mins later when I got hit by a Porsche 944. The 02' plate Scenic also had troubles but thankfully no accident. I'm DONE with them now, that's for sure! :)

Edited January 14, 201213 yr by Mrs HollowPoint

ARRRGH ... that's what I bought - Get rid of it.

 

I came home from work on Monday on a flatbed courtesy of the AA on Monday and had to drive the Z 100 miles a day to work and back every day since. It now needs to go for specialist diagnostics because is an intermittent fault with one of the fuel pumps? Blinking thing drives fine now..... until it feels like going into limp mode or not starting at all. I'll say again, GET RID! :)

 

I wouldnt have bought it but the wife loves it....7 seats etc, maybee we will be getting rid of it as the dealer will be getting it back if its not sorted lol.

 

Cheers

How many miles has the car done john? I had the same engine in a kangoo van on an 08 plate, it was never particularly good on diesel but its first 5k was bloody awful!

To be honest, we often had this question at my old Nissan garage usually regarding the 1.5 and 2.0 Diesel variants It just happens in the winter. Has it had a good blast down the motorway as well?

 

The only other thing, is to try some Forte fuel treatment or give it a service.

Hmmmm We had to put all sorts of treatments through ours. The first thing to consider is crap fuel / water in the fuel and would probably be the first thing the dealer says if you took it back. Unplugging the EGR helped mine. The EGR is yet another common fault that Renault see fit to put their cars on the road with. :)

EXACTLY the same problems with the 1.5DCi Qashqai, they are meant to return 50mpg + but had lots and lots of customers moaning they couldn't get over 40mpg. Problem is when you drop that 1.5 Renault engine into something heavier you have to drive flawlessly to achieve near the claimed mpg. I have to say though that engine is brilliant in smaller cars like the Clio, Nissan Micra and Note.

the other fact is when the manufactures test the engines its done on a engine bench that simulates the running of the car

this isn't the same by far to the real world ...

as a rule that ever the stated MPG is you knock 10mpg off and that's your realistic MPG of your car

That's pretty poor consumption for a derv. My vectra estate regularly gives me 45mpg on a short trip and upto 54mpg on a long one. As said, it does go down a bit in the winter and the strong winds we had the other week really affected it. I was getting about 38mpg driving into the wind but managed 68mpg on the way back with the wind behind me. lol

How many miles has the car done john? I had the same engine in a kangoo van on an 08 plate, it was never particularly good on diesel but its first 5k was bloody awful!

 

 

Chris its got 17k miles on it just over a year old. Have just reset the trip after about 7 miles its at 32mpg looool can see trouble ahead.

EXACTLY the same problems with the 1.5DCi Qashqai, they are meant to return 50mpg + but had lots and lots of customers moaning they couldn't get over 40mpg. Problem is when you drop that 1.5 Renault engine into something heavier you have to drive flawlessly to achieve near the claimed mpg. I have to say though that engine is brilliant in smaller cars like the Clio, Nissan Micra and Note.

 

 

I get your point about the small engine in the big car but the last 08 plate I traded in generally showed 48 to 49 mpg so I cant see why this one is lower by so much.

 

I know for modern engines to be more efficient in what they put out the exhaust they use more fuel but not this much lol

That's pretty poor consumption for a derv. My vectra estate regularly gives me 45mpg on a short trip and upto 54mpg on a long one. As said, it does go down a bit in the winter and the strong winds we had the other week really affected it. I was getting about 38mpg driving into the wind but managed 68mpg on the way back with the wind behind me. lol

 

 

LOL I have a neighbour with a 2.2 Mercedes, his trip sits at 55 mpg motorway and between 45 to 50 town, maybee thats what we need to change the car for lol