Realistic Consumption Values ​​- The "Three Types Method"

It's about a simple question: what does my car use? If you are interested in a new car, you will usually ask yourself the question: What will my car consume? Which car is economical and which car mutates in everyday life to the drunkard? 

The NEDC is not good for the assessment!

In order to be able to compare the vehicles in terms of their efficiency, a measurement method has to be found. The NEDC has existed in Europe since January 1, 1996. And since then, the manufacturer's consumption figures for new vehicles have been based on the European regulation: RL 70/220 / EEC - a driving cycle measurement that is much older than the NEDC itself. This guideline, according to which the Federal Motor Transport Authority certifies the binding fuel consumption values, has existed since 1970.

NEDCThe Wikipedia article about the NEDC illuminates quite well, which is why the NEDC is problematic. Sure, it's a base on which you can compare vehicles, but the drive cycle is too far from reality. Within just under 20 minutes only a few situations of the automobile everyday are dealt with. And driving faster than 120 km / h is not even planned in the NEDC. Instead, frequent traffic light stops and a few seconds of steady travel between 60 and 80 km / h.

The automotive industry has long since agreed to optimize cars for precisely this measurement cycle. Start-stop systems work wonders and also the gradation of the gears, adapted to the needs of the NEDC, help to minimize the measured fuel consumption. Brochure details polish is the results.

Not only since the gasoline price climbs steadily upwards, individual automotive publications have discovered the topic for themselves. Time with more, sometimes with less Pathos gets to the bottom of the “NEDC problem”.

The ADAC had found out in its own tests, the everyday consumption and the NEDC standard values ​​are sometimes diverge by 25%. The customer should therefore take into account the consumption specified in the prospectus, a quarter more.

But - STOP - does “everyday consumption” even exist?

Apart from the fact that a method is needed to be able to compare the efficiency of vehicles with one another, I am convinced that the needs of individual groups of drivers have to be dealt with much more deeply.

In my vehicle driving reports, there is therefore since the consumption test (June '13) with the Honda Civic 1.6 DTEC a “three types method”.

Three is more than one

I am also aware that there is no such thing as a general “average consumption”. But in order to provide a little clarity in the jungle between unrealistic standard consumption and personal driving style, I have summarized the most common driving profiles in "three types":

  • The everyday driver without savings  
  • The eco expert with the green toe 
  • The field worker with full throttle desire

For all three profiles, I have put together appropriate consumption rounds and drive them with the test car (only vehicles that have 14 days available) from.

Everyday driver without savings

In this profile I summarize the drivers who mainly use their car for short daily trips, for weekend trips and for shopping. Drivers who don't worry about potential savings when driving and simply use the car as a means of transport. The lap comprises 6 laps over 10 kilometers (city / country, at least 2x cold starts)). A 10-kilometer route through the city and 45 kilometers over the countryside. All ridden without any sporting demands and easily swam in traffic. Total distance: 115 kilometers

Eco expert with the green toe

The eco-expert deliberately drives less short distances and avoids city traffic, he chooses the optimal route for an economical total consumption and makes the engine run stressed down tour. In this profile 90 kilometers are driven over land. 30 kilometers on the highway with speeds between 100 and 120 km / h and 2 rounds over each 10 kilometers (city / country, at least 1x cold start). Total distance: 140 kilometers

Field service with full throttle desire

In this profile, I am assuming that the car will fly over the autobahn and federal highways, especially when it is in heavy use. In addition, all routes driven are associated with a nervous foot on the accelerator. 200 kilometers of motorways with maximum effort, plus a 45 kilometer long road that is driven with commitment. There are also 2 laps over 10 kilometers each (at least 1 cold start). Total distance: 265 kilometers

Overall, at least 520 kilometers of test drives are on the program. 

The first test drives using this “three-type method” show that the NEDC is definitely achieved in the “eco-expert” type, but the other driving profiles are often more than 200% higher.

From 2017 there will be a new “driving cycle” in Europe, I am looking forward to the results! Until then, I will use the “three-type method” to provide the information to my readers! 

 

 

 

 

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