farty

If you have never urinated on a mate on fire you've never lived.

Yes, there are many alternatives to milk. Blood, urine, diesel, petrol, oil, kerosene (central heating oil), red wine, whisky, gin, vodka, cider, beer, and many more. But milk is handy and won't poison your cat.

Fair comment. The milk just provides certainty. Some drains drip. It might take a while from pouring to scrabbling under the car.

Because it is so distinctive. A cup of milk will colour a sinkful of water. And it's biodegradable. Bit smelly if not flushed away. When I worked on ships, we found a lot of open-ended pipes draining into the bilges. All bilge water has to be treated in a bilge separator and capacity is limited. My predecessor was wont to put a bung in the drain pipe and wait for someone to complain of backed up drains! I preferred to send someone around, pouring milk down each drain. All the wash-hand basins and showers were already plumbed into the grey water sewage disposal plant so there were not too many scuppers to check. One was traced to the sink in the Engineers' workshop!

Is this your own car or were you just nicking the radio?

Did you test with milk as I suggested? Nobody can be certain what that hose is until you check.

Could you take another photo and get it in focus? Also photograph the other fusebox. See if there is a fuse puller clipped onto the cover. The tool will stop you dropping a fuse into the dashboard gubbins or cigarette lighter socket https://www.ebay.co.uk/itm/Fuse-Puller-Remover-Short-30mm-Yellow-Car-Bike-Automotive-Mini-Micro-Blade-Fuse/202092338861

I think you are correct that those two are spares. But they are probably already used! Did you check the fuses on the end of the dashboard? The photo in the Owners Manual is for a left-hand -drive car. You need to look on the driver's side. There is a cutout on the bottom. Use the ignition key blade or a screwdriver to pry the cover off. Again, take a photo so you know where each fuse goes.

pour a little milk into the area below the petrol filling spout (you can rinse it later) and see where it comes out.

Dunno Could it be for the petrol filler flap recess?

You are lucky the dealer ordered a new card for you. At retail, it would have cost you quite a lot.

It's a drain!

On my Yeti there are two slots for SD Cards, you can use the other for music. It does not matter which slot you use. The slots are both vertical. The SD Card goes in the left slot with its label on the left but in the right-hand slot it goes in with the label on the right. When you card arrives, fit it with the ignition off or turn the 'radio' off first. When you first switch on you get a message, Checking Sat data or similar. It should just work. I'm guessing the car had satnav and someone lost or nicked the SD Card!

Post a photo of your fusebox and mark the one you moved. There are more fuses at the end of the dashboard, on the driver's side. What month was your car in 2012. There were changes in May and November. Download your car's manual HERE. It will show you which fuse does what. Be sure to pick the production year from the drop-down list first. Obviously, that fuse was for the horn but it may also have been for something to do with the EGR or other environmental devices on the engine.

I think you need to get the timing belt inspected and do the water pump at the same time since they are close on the engine. But check with your garage as I don't own that model. It's 60,000km or every four years!

As the coolant gets hot the pressure rises. So it may not leak until the temp gauge has reached its normal position. The leak could be anywhere. Do you have the car's history? Has the water pump been changed ever?

My car is a Yeti but there is a lot in common.

It is all explained in the owner's manual. But to save you the effort...... When you exit the vehicle and remove the key and shut the door, the anti-theft alarm is activated. It is sensitive to movement inside the vehicle. To deactivate the motion sensor you can press a button on the pillar behind the driver's door or you can press the plipper twice when you lock it. The Safelock message is a reminder for all this. Vehicle wallet refers to the manual, normally in the glovebox, it just suffered in translation. Look for the MySkoda app for your Android or Apple phone.

IF there had been a lot of bubbles in the coolant header tank, that would suggest a failed head gasket or possibly a cracked block. If the water pump seal fails you should see a puddle under the car after it's been parked a while. It sounds like the OP's situation - a leak that starts when the coolant system pressurises as it gets to normal operating temperature or perhaps when the engine is worked hard and the coolant gets hotter still. It could be venting as steam but in that case I'd expect the temperature to be above normal ie 100C plus

If you can't see any coolant under the car I don't think it will be the water pump (which has a seal that might fail). If you take the header tank cap off when the engine is cold and then start the engine, do you see any bubbles?

I wonder if the same pedal is fitted to manuals and automatics? Sounds as if it is.

I see yours is a manual, so it's probably something stuck under the pedal! Carpet or some junk. Get down and have a close look.

A telescopic magnet might get it out. I have one in a screwdriver. https://www.amazon.co.uk/Laser-7026-Flexible-Magnetic-Assorted/dp/B07CT1FQCJ

Arnold Clark Skoda, Inverness has closed permanently. But Hawco VW has taken on the franchise. My car is going in to have the Haldex V oil change and filter clean. Cost will be about £120.

https://www.halfords.com/motoring/engine-oils-and-fluids/engine-oil/?isVrnSearch=true for your Octavia.