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Dacia Sandero Diesel MPG consumption

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9.1K views 10 replies 8 participants last post by  Roger  
J
#1 ·
I bought my Sandero because had a 60+ MPG consumption

However, no matter what I do , the most I get is 53 MPG ( combined)

I do about 100 miles each day, and try not go too fast ( 70+), in fact I use cruise control a lot as is mostly motorways - also have ECO control enabled

Maybe I need to go at a lower average speed?

What is your mpg experience?

Thanks
 
#2 ·
Is that a calculated figure or using the onboard computer? Dacia's figures are from a lab environment on a flat surface, no drag etc and certainly not at 70 mph, but I certainly would have expected a better figure from a nice light car like yours.
 
#4 ·
What's the engine? The actual MPG never reaches what the manufacturers claim. See Widu's post. You can try upping the tyre pressures for less sidewall flex. Some of the cars (mine) came with Conti-Eco Contacts which have less flex for fuel saving.

You'll get max mileage at around 55 mph, which is not much fun on motorways. My Logan DCi will get 70 mpg, but only driving like a granny. The average is about 58, though I've had 65 on long trips.

Cold weather uses more fuel as do roads with more traffic. 53 seems not too far from the 'real' figure. As discussed often before, the trip/fuel computer, if you use it was programmed, by a child. It makes stuff up to impress people. :)

You can try a premium fuel. This works for some people, but costs 10% more. I use Shell Nitro-stuff 'advanced' diesel in the Logan if only to keep the injectors clean. I've no idea if it's worth the extra expense, or whether it actually does anything other than lighten the wallet.

Cruise control is not as 'efficient' as manual driving, say the hypermilers. They use 'gliding' in manual to save fuel, which doesn't work on British motorways, unless you want Scania headlights embedded in your rear bumper.

The other tip for commuters is more frequent oil changes, at say 6000 miles. Whether you'll save anything after a £30 oil change is also debatable, but I do them on mine with a dipstick-tube hand-pump.

Finally, you can increase the distance between you and other cars to about four car lengths. This reduces the amount of disk braking. The Euro 6 cars have regen braking which feeds alternator power back into the battery on 'coasting' to slow the car. It's very efficient but only adds about 3% fuel economy.
 
J
#5 ·
Thanks you guys for your comments

This is "real" consumption figures- fill tank to fill tank measures

It seems the advertised figures for this engine is way over the real world values

I would have understood if the figures were slightly different, but from 50 mpg to 80 mpg advertised, that's like 70% more

If this were another industry I would say this is misleading advertisement, if not outright fraud
 
#6 · (Edited by Moderator)
60+ MPG is easily attainable if you drive in 5th in the inside lane of a Motorway, driving like Aunt Daisy !! I have done it over a quarter of a tank of diesel. Anything more than that is just plain 'hard work' I still do it occasionally just to be frugal !! My average over all driving conditions is about 52 MPG. I am more than happy at anything over 50 MPG as in the 1960s you were lucky to get 28 miles to the gallon in any car. How engines have improved over the years !! ;)
 
#7 ·
There's a lot of political maneuvering over real MPG's v. claimed, Nox emissions and so forth. Renault have so far escaped lightly but Fiat are currently taking a hammering.

Sandero DCi 66KW has been named among the worst 'polluters' in this report, with 12.8 times the RDE (recommended daily emissions) tests, mostly due to cold-start emissions levels.

Because emissions are essentially waste fuel, Renault and others are working on new cold start maps and technologies to control these. As Roger says, granny-driving can approach the manufactures' figures, but on busy roads in cold climates, it's almost impossible.

On the upside I did get 70 mpg when the car was new and I was nursing it around by driving it to Belgium and back, but I'm pretty happy with 58 mpg average. If ever the fuel light comes on, I know I can nurse the car home at 65 mpg, slowly.

One final thought comes to mind, a lot of work has been done on turbo-engine efficiencies at 'out-of-boost' engine speeds, which is about 1200-1650 rpm on the DCi's. Because these cars are long geared for fuel efficiency, I have (un-substantiated! ) suspicions that some drivers might be using the old school techniques of engaging fifth as soon as possible, when the DCi engine is most efficient with the turbo spooling. (1800-3000 rpm.) The Logan DCi is geared for 2000 rpm at 70 mph, right in the boost zone.

Driving out-of-boost for long periods causes deposit build-up on the cylinder walls and piston/skirts/crowns, which leads to more friction, emissions and cylinder wear, but it's more noticeable on cold-running petrol engines.

I still don't know if buying a diesel was the 'Right Thing'. The extra torque is great, as is the fuel economy, but the current political/Twitter outcry along the lines of 'Ban Diesels from Major Cities' is worrying.

Lovely car though. :)
 
#8 ·
I am getting 63 overall (my calculation from refills) no problem; 70-75 on motorway, and plenty of local town shopping, never gets into top gear for this; local journeys 4-9 miles at a time,4 times a week; and not hanging about. last run on motorway above at above speeds, returned 76.4 m.p.g.
 
C
#9 ·
I have a Sandero Access, with the petrol 75 Sce engine. First thing you ignore the change up light, as you will burn the clutch out of you use it lol. Once the engine was run in, I did some fuel consumption tests using different driving styles, and have found hi revs in each gear gives the best fuel consumption. Reading postings on the forum the engine is designed as a high reviving unit, maximum power is at 6,300 rpm. I now get 54 to 55 mpg on motorways, and 50 mpg urban driving using the high reviving technique. Sounds unlightly, but does work.

John
 
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