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Questions tagged [fuel-consumption]

Use for questions related to fuel economy.

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2answers
296 views

Does a black car have worse fuel consumption?

As we all know, in hot climates part of the engine's output goes to power the AC compressor. Now, in such a climate, if your car is painted black, it should absorb more sunlight, and therefore, ...
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1answer
9 views

Land Rover Freelander 2 - Bad MPG

2007 Freelander 2 Was having what I consider bad MPG for a diesel, averaging around 23-24mpg Initially thought it needs a service, so lots of money later for a full service which would have ...
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1answer
458 views

Short term fuel trim shows -9% (Rich)

Honda Civic 2007 90km odometer Problem- Fuel consumption I have scanned my car and it shows STFT -9% along with below parameters. Coolant temp -> 64 LTFT -> -7.03 Oxygen sensor voltage -> .55v EGR ...
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1answer
94 views

Which value should takes to show Gauge value, Fuel pressure or Intake Manifold Pressure?

Currently, I'm working on an app which should show Gauge value (inHg) of the vehicle using OBD reader. Which values should I use to show the Gauge? Is there any formula?
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1answer
87 views

2001 Vw beetle 02 sensor car will not go over 65mph

I have a 2001 vw beetle 2.0 engine with 171,000 miles on it. I have a check engine light on saying that bank 1 lean. It has been like this for years and I have had no problem with it. Yesterday I ...
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1answer
1k views

My Toyota Corolla 2009 Le 1.8l fuel consumption too high

I run my car in normal use in highway and no traffic I spend $20 full tank 90 miles I replace my tires,spark plugs Oem ,Transmission fluid with filter,Engine oil with filter,Thermostat,antifreeze,Air ...
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votes
1answer
36 views

2004 Audi TT 1.8 poor MPG

I have Audi TT 1.8 04 plate My average miles is 50/60 per week. However I don’t seem to get many miles for a fuel tank. Average 210 for £60 fill up. What could be the problem ?
4
votes
0answers
73 views

Integrating Fast OBD Readings and GPS

I'm working on a project to look at fuel consumption on different roads and I need the OBD reader to log the GPS coordinates every time it takes a reading. I'm looking at instantaneous fuel ...
3
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0answers
52 views

Runing a lot of gas

I have a 2006 Dodge Durango 175,000 miles I had a fuel pump put in Feb of this year, but now I am burning a lot of gas. I have to fill up my truck every four days now. Before I could ride on a full ...
3
votes
0answers
82 views

What's the most efficient way to manually hold a specific speed?

I noticed that my new car is by activated cruise controll at lets say 50 km/h handling this speed by displaying an current consume of 1.8~2.4 l/100km, while when I'm trying to find the required ...
3
votes
0answers
128 views

Decreased MPG, clicking sound when pressing accelerator

Over the past week, the MPG on my car has gone down significantly, about 3-4 MPG. My driving habits have not changed. In the meantime, there is a distinct "pneumatic" clicking sound whenever I press ...
2
votes
0answers
75 views

Suspected slow leak in carb, mileage low only when time taken to consume fuel

I have a weird mileage issue in my CB Honda Hornet motorcycle. This is a version specific to India, https://auto.ndtv.com/honda-bikes/cb-hornet-160r It has a 160cc engine. During the first 1000 Kms, ...
2
votes
0answers
94 views

07 Camry Engine slow RPM and excessive fuel consumption reading

I have 2007 Camry manual made in Australia for Arabic gulf. The engine sometimes go to 500 rpm and suddenly stops. Or it also goes to 1500 rpm and doesn't return to 1000 rpm (which is the normal as ...
2
votes
0answers
111 views

Emissions per mile of high MPG lean-burn gas-powered cars versus standard gas-powered cars

I am wondering if there have been studies or calculations of the NOx emissions per mile of high MPG lean-burn gas-powered cars versus standard gas-powered cars. Honda made some great lean-burn cars ...
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0answers
43 views

LTFT zero on mazda cx7 2008 + high fuel consumption

I have this Mazda CX7 2008 2.3L turbo, and am experiencing the following: LTFT is zero, no matter what conditions I drive the car on. Gas consumption is high: ~22L/100km (10.6 MPG) DTC P2006: Intake ...
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0answers
28 views

Trucks fuel economy dependence on weather

I am searching scientific data and studies on the link between weather and fuel consumption in HDV (heavy duty trucks). For now I have found almost nothing. Can anyone help?
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0answers
19 views

Mitsubishi Montero limited Have EXCESS FUEL consumption

My Fairly used Mitsubishi Montero limited 2000 model has excess fuel consumption like 30litrs per 100km Accompany with very hot interior under the feet even with a c on though vehicle not doing ...
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0answers
26 views

Sudden Oil consumption increase

There is increased oil consumption in a 2009 chrysler 300c that has the 5.7 Hemi motor .There are no oil stains on the garage floor .There is an apparent fuel consumption increase which we ...
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0answers
47 views

New plugs, but problems starting (not firing on all cylinders) and poor fuel economy?

Car is a '93 Mk1 VW Cabriolet, 1.8lt injected. The car has had trouble starting - feels like only some of the cylinders are firing. If I rev the engine a little the problem goes away after a few ...
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0answers
38 views

Car sometimes starts rough, almost stalls when coming to a stop, poor fuel mileage

I have a 2013 Chrysler 200 LX 2.4L 4speed automatic. Last summer it occasionally had difficulty starting. One in every few starts it would start rough. Now I've noticed recently it seems like it's ...
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0answers
294 views

Valves calibration vs fuel economy

My new hobby car (Fiat 126p, 2 cyls air cooled, rear mounted) is not doing correct fuel economy. Spark plugs looks ok. Fumes, at cold start are black but as it warms up, it looks ok. The only ...
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0answers
327 views

Cars with single fuel type how retrieve tank level to dashboard?

I see that BiFuel cars had fuel level and type readable from ECU by using pid 0151 and 012F. Cars with monofuel don't have this pids sensors, so how the dashboard retrive the fuel level? Maybe the ...
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0answers
125 views

Fuel consumption problem

Morning I have a Toyota Corolla LE 2004 model, it consumption level is very high as in 50lt can finish in 2 day from my office to back home with is a 15 minute drive. I have scanned the vehicle ...
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0answers
114 views

Truck burning through a lot of gas

Vehicle Information: 2006 Ford F150 4WD with the 5.4L Problem: On the way to work I noticed that the truck was "burning" a lot of gas. As I drove, (at a normal speed - 60 mph) I noticed that the ...
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0answers
143 views

Opel Corsa lite 1.4 2002

After reconditioning cylinder head and skimming. Fitting new hydraulic lifters and rockers, find no compression on engine once oil reaches the lifters compression disappears. Tried reducing length ...
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0answers
433 views

fuel consumption in CR-V 2007

lately I found my car consuming more fuel than usual,it was doing 8 liters per 100km,then it raised to 12 liters per 100km,I asked its agency to check for the problem,they found nothing unusual,after ...
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0answers
24 views

Why are my oxygen sensors staying at 1.275v most of the time?

I have an old Volvo s40. Because I had gotten a P0420 code and because of it, an OBD scan tool, I noticed that my fuel trims were very high. Or they could be the result of the age of the car (17 years ...