[Bazrazmataz]

Hi ive had a mazda 6 2.0 2006 sports Diesel model for two weeks now and im noticing im getting low mpg than id expect for a diesel. I can pretty much see the fuel gauge dropping down as i drive a small 30 mile trip. According to the computer im getting 12.5 litres to 100 miles , i worked that out to be around 36mpg on all my other diesel cars ive got almost 10 miles more a gallon than this so im pretty concerned.

Another thing is im concerned there could be a fault with the whole fuel gauge and computer working out system. When i first bought the car it was half full , i went and filled up to max and it cost me £55 , i drove around for a few days and the fuel went down , the needle was pretty much at the bottom the computer said i had 30 miles left but the red light never came on, pretty much all my other cars the light came on when u had less that 50 miles left. I then filled up to max i always fill to the click then try and squeeze a bit extra in , that cost me 70 quid and that was 5p a litre higher than when i first topped up , so i was confused why it was not nearer 100 quid. Since then ive drive 140 miles, the needle was over the top of the full where id got the extra in and didnt drop till 100 miles but since then its gone from the top line to 3/4 of a tank in 40 miles ?

Im pretty concerned and am certain this cant be right. The car was serviced (everything done but cam belt ) two days ago and the bloke who did it told me it had been well looked after and he didnt find any probs with it.

Anyone got any advice

thanks

 

[Hudson9]

The Mazda experts at the dealership say with driving in a clever manner can improve the fuel economy of the Mazda6, as demonstrated in a recent 370-mile 'eco-race' across the UK.

Named the MPG Marathon, a standard 2.2-litre Mazda6 recorded fuel economy of 67.44mpg. Not only is this on par with a small hatchback, it is also an improvement of 21 per cent over the official figure of 55.4mpg.

The result, says Mazda, was more impressive because the route took in a mixture of motorways, A-roads and B-roads as well as changeable weather conditions.

Speaking about the marathon, Peter Lambert, Dealer Principal at Perry Preston. "The secret to smarter driving is to anticipate traffic flow so as to move more efficiently through traffic. Not only does that conserve fuel but the journey is achieved in a slightly quicker time."

The Mazda6, a four-door saloon popular with business and fleet drivers in the UK because of its high level of equipment, refinement and the introduction of a dedicated Business Line model, is on sale in the UK now.

Priced from as little at £15,995 including a customer saving of £2,860 and £3,005 for a limited period at Perrys Mazda in Preston.

Perry Preston suggests the following smarter driving tips to improve vehicle fuel economy:

- Ensure tyres are inflated to the correct pressure as recommended by the vehicle manufacturer to maximise MPG

- Stay at or within the speed limit. At 70 mph drivers could be using 9% more fuel than at 60 mph and up to 15% more fuel than at 50 mph

- Stop-start motoring uses more fuel. Keep an eye on the traffic ahead and slow down early by gently lifting off the accelerator while keeping the car in gear. The traffic may have started moving again by the time you reach the vehicle in front so you can change gear if necessary and be on your way

- Driving smoothly and avoiding harsh braking and acceleration saves fuel and reduces vehicle wear and tear

- Change gear at 2,500 rpm in petrol cars and 2,000 rpm in diesel cars to optimise fuel efficiency

- Using 'block gear changing' - for example moving from third to fifth as soon as possible - will burn less fuel

- Do not leave the engine idling. If likely to be at a standstill for more than three minutes, switch off the engine.
Car Performance Parts

 

[1800OnlineAutoParts]

The things to generally check with diesels when it is down on power and or mileage is the air and fuel filters. You say that you are using more fuel than you think you should? If the injectors were bad, causing excessive fuel consumption, it would smoke(black) out of the tailpipe more than usual.

Taking in consideration that the engine is sound, (cylinder compression and leakdown tests OK), check to see if the camshaft timing may not be right or if it has jumped a tooth on the cam/crank sprockets.

Good Luck

 

[darkgran]

Did you ever resolve this as I'm getting similar with my 2.0l diesel?

 

[Flooding]

Similar thing to mine , I'm guessing EGR but still takes too much fuel,on average ,it's 2.0 diesel ...

 

[jovanzac]

Hi ive had a mazda 6 2.0 2006 sports Diesel model for two weeks now and im noticing im getting low mpg than id expect for a diesel. I can pretty much see the fuel gauge dropping down as i drive a small 30 mile trip. According to the computer im getting 12.5 litres to 100 miles , i worked that out to be around 36mpg on all my other diesel cars ive got almost 10 miles more a gallon than this so im pretty concerned.

Another thing is im concerned there could be a fault with the whole fuel gauge and computer working out system. When i first bought the car it was half full , i went and filled up to max and it cost me £55 , i drove around for a few days and the fuel went down , the needle was pretty much at the bottom the computer said i had 30 miles left but the red light never came on, pretty much all my other cars the light came on when u had less that 50 miles left. I then filled up to max i always fill to the click then try and squeeze a bit extra in , that cost me 70 quid and that was 5p a litre higher than when i first topped up , so i was confused why it was not nearer 100 quid. Since then ive drive 140 miles, the needle was over the top of the full where id got the extra in and didnt drop till 100 miles but since then its gone from the top line to 3/4 of a tank in 40 miles ?

Im pretty concerned and am certain this cant be right. The car was serviced (everything done but cam belt ) two days ago and the bloke who did it told me it had been well looked after and he didnt find any probs with it.

Anyone got any advice

thanks

HI,

Mine is 2008 Hatchback and i got average of 7 l/100km circa. My trip was 15km per day driving with 70 km/h and 10km in town ( traffic, lights etc ). I realized that i have DPF regen every 2-3 days and it lasted more that 15 min. Rarely i could finish the regen cycle. At the end i removed DPF, it was full of ash, catalytic converter is still on the car, and now the results: no more oil level rise and fuel consumption now ( same trip and style of driving ) around 5 l/km ( that is in summer, winter +1 litre ). I also have cleaned EGR but this was before DPF remove. I passed "MOT" with no problems at all.