Is Your VW on Longlife Servicing or Fixed? Most Owners Have No Idea

Two VW Golfs, same year, same engine, parked next to each other. One is due for a service at 12 months. The other can go to 24.

Both are correct. They are on different service regimes, and almost nobody is told which one their car is on.

If you drive a Volkswagen, Audi or Skoda, this is worth five minutes, because being on the wrong one quietly costs you an engine's worth of wear.

The two regimes

Fixed servicing, sometimes called time and distance, is the straightforward one. Roughly every 12 months or 15,000 km, whichever arrives first. Same interval every time, regardless of how you drive.

Longlife servicing, also called variable or flexible, lets the car decide. Sensors watch oil condition, engine load, trip length and temperature, then calculate when the oil actually needs changing. On a car doing long highway runs that can stretch out towards 24 months or 30,000 km.

Longlife is not a trick. On the driving it was designed for, long sustained runs where the engine reaches full temperature and stays there, the oil genuinely lasts that long.

The problem is that very few cars in Melbourne do that driving.

Why Melbourne driving breaks the assumption

Longlife assumes the engine spends most of its running time hot.

A twenty minute suburban commute, a school run, a few errands on the weekend. On that pattern the engine spends a large share of its life not fully warm. Fuel and moisture get past the rings into the oil instead of being burnt off. The oil degrades faster than distance alone suggests.

The car's sensors do account for some of this and will shorten the interval. But a lot of owners on Longlife are driving the exact pattern the regime handles worst, and stretching their oil changes to suit a number that was calculated for a different life.

If your driving is mostly short and mostly suburban, fixed is the safer regime. That is not a sales position, it is what the two schedules were designed for.

The part that catches people out

Longlife extends the oil interval. It does not extend anything else.

Everything else on the car still runs to its own clock:

• Brake fluid, commonly every two years regardless of distance
• Pollen and cabin filters
• Spark plugs at their own interval
• DSG oil and filter on the gearboxes that take it
• The timing belt, where the engine has one, on kilometres or years

So a car can be perfectly within its oil window and still be badly overdue for three other things. We see this regularly. The owner has done nothing wrong, they have simply been told the car is not due, and the car was only ever talking about oil.

If your only service trigger is the message on the dash, you are tracking one item out of six.

Longlife needs Longlife oil

The regime depends on a specific oil specification. It is not a brand, it is a VW standard, and it is printed in the handbook for your engine.

Put a cheaper oil that does not meet the standard into a car running Longlife intervals and you have a product designed for 15,000 km being asked to do 30,000. That is how engines end up with sludge and worn timing components at kilometres where they should be fine.

This matters most on cars that have been through several owners and several workshops. One cheap oil change somewhere in the history does not announce itself.

How do you find out which one you are on?

Three ways, easiest first.

Look at the service history. If the intervals are consistently around 12 months, it is on fixed. If they are stretching well past that, it is on Longlife.

Check the handbook for your build. It will say which schedule applies and what oil specification goes with it.

Or have it read properly. The regime is stored in the car and can be read, and changed, with the factory tool.

Can you switch?

Yes. The setting can be changed with the correct diagnostic equipment, and switching from Longlife to fixed is common on cars that do short trip driving.

It is not a dashboard menu item on most models and it needs to be done properly, with the oil and the records matched to the new regime. Done halfway you end up with a car on one schedule and oil for the other.

What we do

We read which regime your car is on before quoting, not after. We tell you what the car thinks is due, and separately what is actually due once brake fluid, filters, plugs and gearbox oil are counted.

Then you get a written quote before anything starts.

Oil to the correct VW specification for your engine, genuine or OEM supplier filters, service recorded against your VIN and the logbook stamped. Servicing to the manufacturer schedule at a qualified independent workshop does not affect your warranty.

We diagnose it. We fix it.

Tell us the model, the year and the kilometres, and we will tell you which schedule your car is on and what is genuinely due.

Logbook servicing from $395.

We are in Dandenong, five minutes from the highway, with off street parking and early drop off.

Book it in, or see the other European marques we work on.