Petrol in a Diesel Mazda 6: What the Tank Holds
The size of the fuel tank is one of the earliest things worth knowing after you have got petrol in a diesel Mazda 6, since the proportion of the fuel that is currently petrol depends on it. The tank and the engines are given here for each Mazda 6 version that we hold figures for.
The guidance doesn't change with the number once it has happened. With the motor kept off, call Petrol in Diesel and the car can be drained where it sits.
Mazda 6 fuel tank capacity, version by version
Between 62 and 64 litres is the spread for the Mazda 6 diesel tank, and the version you have determines where yours sits.
The largest in our data is fitted to the 6 Sport 2.2 MZR-CD, and the smallest is on the 6 Estate 2.2 D.
As a comparison, 64 litres is the figure for the 6 2.0 MZR-CD Sport-Estate.
On the 6 Sport Estate 2.0 MZR-CD the tank size is 64 litres.
| Version | Fuel tank |
|---|---|
| Mazda 6 2.0 MZR-CD | 64 litres |
| Mazda 6 2.0 MZR-CD Sport | 64 litres |
| Mazda 6 2.0 MZR-CD Sport-Estate | 64 litres |
| Mazda 6 2.2 D | 62 litres |
| Mazda 6 Estate 2.2 D | 62 litres |
| Mazda 6 Sport 2.0 MZR-CD | 64 litres |
| Mazda 6 Sport 2.2 MZR-CD | 64 litres |
| Mazda 6 Sport Estate 2.0 MZR-CD | 64 litres |
| Mazda 6 Sport Estate 2.2 MZR-CD | 64 litres |
A couple of litres of wrong fuel in your Mazda 6, and what they amount to
The share of petrol rests on how full your tank was before you filled up. That's because wrong fuel in your Mazda 6 blends with whatever diesel was already in there. Up to 64 litres go in your tank. Filling a nearly full one with a couple of litres of unleaded means just a minor share of petrol in the total, whereas the same quantity in a nearly empty tank makes up far more of what your engine would take in.
Drivers commonly want to know how much petrol counts as too much. Starting the motor is what carries the blend from the tank and through your pump and the fuel injectors, so the more helpful thing to find out is whether it has run.
With a modest volume, a fuel drain is usually all your 6 needs, and whatever the proportion, getting it emptied is the sensible course.
Which engines your diesel 6 came with
The motor in your 6 is given in the version name on the badge. Note it before you call.
The engines run from 2.0 litres in the 6 Sport 2.0 MZR-CD to 2.2 litres on the 6 Sport Estate 2.2 MZR-CD.
Among the 6 versions in the figures are Estate ones.
Not knowing which version you have does not matter. Ring anyway, and we'll work it out with you.
AdBlue in a diesel Mazda 6
AdBlue changes what the size of your tank means. With AdBlue in a diesel Mazda 6, the diesel sitting inside the tank does not dilute it. Being largely water, AdBlue stays separate from your diesel and sinks to the bottom, which is where your pump pulls from. Even a small quantity ends up in the fuel lines.
AdBlue doesn't burn and gives the pump no lubrication, and as its water dries out, the urea left behind crystallises in your lines and the filter and corrodes the metalwork next to it.
The filler neck for AdBlue, on diesel vehicles that carry it, commonly shares a flap with the diesel one and leads to a second tank. On any 6 with an AdBlue filler, a blue cap generally marks it, and that cap takes a narrower pump nozzle than the diesel one.
Fuel drain on your Mazda 6
A fuel drain on your Mazda 6 clears the entire tank, whatever its size on your version, and it is done where the car is sitting. Fresh diesel goes in after the contaminated fuel gets pumped out and the lines and the filter are rinsed, and then the system is primed and your engine started.
It doesn't matter whether your 6 is sitting at the station forecourt or parked on your drive. Fresh diesel is what it runs on when the drain is done, and so you can take it away.
AdBlue removal from a diesel Mazda 6
Emptying the tank entirely is how AdBlue removal from a diesel Mazda 6 begins, as AdBlue doesn't blend in and collects at the base instead. We also flush the lines and your filter through if your engine has run, replacing your fuel filter when it needs replacing.
Removing or switching off the AdBlue system on the car isn't what this is about. It's about AdBlue that has gone into your diesel tank.
Pricing a fuel drain on the Mazda 6
Two jobs on the same model can be very dissimilar, so we don't give a fixed price. Whether the 6 has been started or driven affects it most. After that it rests on how much went in compared with the tank size, whether petrol or AdBlue went in, and the car's location.
With those details, we can tell you what this job will need when you phone.
Questions on the tank and petrol in a diesel Mazda 6
How many litres is the Mazda 6 fuel tank capacity?
Between 62 and 64 litres, according to the version. You can see each one in the table above.
Does a bigger tank make petrol less of a worry?
In a larger tank, petrol makes up a smaller part of the total, yet it has not gone anywhere, and it reaches your pump once the engine runs. Leave your 6 turned off and emptying it gets every bit of the petrol out.
How many versions of the diesel 6 are in your data?
We have figures for 9 diesel versions of the 6, so you can spot yours in the table above by the name on its badge.
Which fuels, other than diesel, would be wrong fuel in my Mazda 6?
Anything apart from diesel in your diesel tank, which means petrol of every grade, super unleaded as well, or AdBlue intended for its own dedicated tank.
Do you come to the Mazda 6 to drain it?
Yes. We come to your car, whether it's still at the forecourt or parked on your drive, so it does not need to be shifted or started.