Hello to the forum.

I have a Skoda Octavia Combi 2011.

Today I found that my car has 2 different engines. The sticker on the boot of the car says it is a CAYB.... On the timming belt it says it is a CAYA.... In the service booklet the first-page sticker is missing...

This car was bought NEW from the official dealer.

Am I worrying about nothing or does my car have a ridiculously underpowered engine and I should complain to the dealer?

I dont know if this means anything either, but last week I "raced" a very old and unkept VW Golf mk3 with 75cv.... and lost!

Please send some feedback...

In order to show what I mean, I will post some pictures.

I will appreciate ANY feedback on this issue. Do these numbers make sense?

1. My VIN number:

2. The first page of the maintenance manual:

3. The sticker in the spare wheel pit:

4. The VIN plate in the left strut of the car:

5. The engine identification characters and serial number in the timing belt guard:

6. Where I looked for the engine code engraved in the engine itself:

7. What I found in that location (engraved in the transmission):

Do these numbers make sense? Does my car has a 75hp CAYA or a 105hp CAYC engine? Please help.

Edited 4 February, 201214 yr by JoaoP

This VIN decoder

http://igorweb.org/vindec/default.aspx

gives the following info about your car:

Škoda Octavia II Combi Elegance 1.6 TDI 77kw

model year 2011, production number 110511

6x airbag, production plant Mladá Boleslav (CZ)

77kw = 105ps.

This VIN decoder

http://igorweb.org/vindec/default.aspx

gives the following info about your car:

Å koda Octavia II Combi Elegance 1.6 TDI 77kw

model year 2011, production number 110511

6x airbag, production plant Mladá Boleslav (CZ)

77kw = 105ps.

Thanks. Very good info! So why don't the engine numbers match in all documents? How can I be sure I have the correct engine?

The factory says I have a CAYC on the VIN plate so I'd expect that the factory records say the same. However, the actual engine (as seen in the timing belt cover) says it is a CAYA, as well as the documentation I have from the dealer.

One way to sort this out would be to check the punched code in the cylinder block. However, I failed to find it. Is it the picture I posted with the gearbox?

Edited 4 February, 201214 yr by JoaoP

I'm pretty sure all the timing belt covers say CAY. The A is actually part of the engine number and not part of the type code.

Says CAYC on the build sticker and the chassis plate so I'd believe that.

I'm pretty sure all the timing belt covers say CAY. The A is actually part of the engine number and not part of the type code.

Says CAYC on the build sticker and the chassis plate so I'd believe that.

That is NOT true. The 4 characters refer to the engine identification. From the office workshop manuals it reads:

"- The engine identification characters have 4 digits starting with the letter C.

- The first 3 digits of the engine identification characters refer to the displacement and the mechanical construction of the engine. they are type-punched in the cylinder block including the serial number.

- The 4th digit refers to the output and torque of the engine and depends upon the engine control unit."

The fact that the engine is CAYA or CAYB can also have changes elsewhere other than the ECU, like exaust system,...

p.s. Trust NOONE!

Edited 4 February, 201214 yr by JoaoP

I'll double check next time I get one in but I'm sure even the B and C still start A on the rolling alphanumerical code.

Either way your not going to find the engine number on the block, they just don't normally stamp them these days with anything usefull.

Diagnostics will tell you what ECU is fitted.

I have found this codes in the engine block. I don't think they are what we are looking for (the engine id number), but maybe it can shed some light into the discussion.

I do not want to disassemble the guards, to access the ECU. However, when the vagcom data cable arrives, I will check which ECU is hidden in there. Does anyone have the ECU references for these 2 engines?

Edited 4 February, 201214 yr by JoaoP

When you go into engine in VCDS it will give you the engine code. No need to take anything apart.

When you go into engine in VCDS it will give you the engine code. No need to take anything apart.

Yes, that is what I am waiting for.

I'm pretty sure all the timing belt covers say CAY. The A is actually part of the engine number and not part of the type code.

Says CAYC on the build sticker and the chassis plate so I'd believe that.

+1

The engine number starts with an 'A'.

IIRC, neither the CAYA or CAYB engines are/were fitted to any Octavia.

+1

The engine number starts with an 'A'.

IIRC, neither the CAYA or CAYB engines are/were fitted to any Octavia.

I will quote the workshop manual:

From what it says, all codes (engine engraved, timing belt cover and vehicle data sticker) are -or should be- the same.

Edited 4 February, 201214 yr by JoaoP

The picture you have posted from the workshop manual (ELSAWIN?) is for the BMM engine. The one for the CAYC engine is four above that, but the location of the engine identification information is the same, namely at the engine/gearbox joint. ETKA shows that the CAYA has only been fitted to the Fabia and Fabia Scout, and the CAYB to those two models plus the Roomster. It also shows that the CAYA, CAYB and CAYC engines use the same timing belt cover - PN 03L 109 107B. The label in your photo doesn't include a part number.

There should be a vehicle data sticker in the Service Schedule, but there is one in the boot - although whoever put it there made a real mess of fixing it. If it were my car I would ask the dealer to obtain two replacement stickers. If that isn't possible to arrange, I would try removing the boot sticker very carefully and then photocopy it so that I had one for the Schedule. You could also ask the dealer for a vehicle data printout for your car. This not only lists the information on the sticker, but also includes production and delivery dates, plus all the PR numbers (option codes) for your car. The printout for my car is 4 pages long!

Finally, I recommend that you stop worrying and start enjoying your car.

The picture you have posted from the workshop manual (ELSAWIN?) is for the BMM engine. The one for the CAYC engine is four above that, but the location of the engine identification information is the same, namely at the engine/gearbox joint. ETKA shows that the CAYA has only been fitted to the Fabia and Fabia Scout, and the CAYB to those two models plus the Roomster. It also shows that the CAYA, CAYB and CAYC engines use the same timing belt cover - PN 03L 109 107B. The label in your photo doesn't include a part number.

There should be a vehicle data sticker in the Service Schedule, but there is one in the boot - although whoever put it there made a real mess of fixing it. If it were my car I would ask the dealer to obtain two replacement stickers. If that isn't possible to arrange, I would try removing the boot sticker very carefully and then photocopy it so that I had one for the Schedule. You could also ask the dealer for a vehicle data printout for your car. This not only lists the information on the sticker, but also includes production and delivery dates, plus all the PR numbers (option codes) for your car. The printout for my car is 4 pages long!

Finally, I recommend that you stop worrying and start enjoying your car.

Thanks for your post.

1. The picture I have posted is from ELSAWIN 3.90 for the SKODA OCTAVIA 1.6 TDI CR (Skoda, 2011 code B, 1Z5 Octavia Combi, CAYC engine, LHW gearbox, sales model 1Z5 324). Please see this new image:

2. Yes it is true: CAYA was only fitted to Fabia.

3. The timing belt cover is the same in the CAYA/B/C engines, as are most of the parts of the engine. That is what CAY means.

4. The label in the timing belt cover photo I showed, has the engine serial number CAYA37958 as is in the dealer documentation.

5. The vehicle data printout is a very good idea. Thanks.

6. I AM enjoying my car, though it can seem otherwise. This is my second Skoda. Before this one I had a 2001 Octavia Combi 4x4 with the 1.9 TDI engine. Then, last year, I updated it into this new model a Octavia Combi with the 1.6 TDI engine. It seemed a similar car, and the old one had already too many miles on it. The first think I noticed was that the engine didn't seem as powerful as before. Some months ago, when I raced neck-to-neck with a VW Golf mk3 with 75hp I felt something could be wrong, though I didn't know what. Last week, when studying to implement a rear-view-camera I noticed all this strange and different numbers and then it hit me... could it be...?

I think if someone has a picture of the timing belt of an Octavia showing the engine number with CAYA##### it could sort things out a bit.

I am learning about my car from all this and have turned up something unexpected. When I bought the car privately I was told that it was set for variable service intervals. A check of the dash readout confirmed that and over the past 4 months I have been watching the mileage to next service reduce steadily, with a service likely to be due at around 14,000 miles. When I played with VCDS I also confirmed that the car was set for variable service intervals. But in the process of checking the Service Schedule to see what information the vehicle data sticker includes, I noticed that the selling dealer completed the delivery information box to show that the next inspection service is due in km/miles 10,000 or by 18-12-2011 (whichever comes first or according to the Service Interval Display). I am totally confused by that!

Now back to JoaoP's doubts. I tried to get sight of the engine/gearbox joint on my car to see what engine information is there but couldn't. I thought it might be on the vehicle data sticker for my car, and failing that the vehicle data printout from the dealer, but it isn't. But it is in the car's UK registration certificate and is CDA 156***. That same number is printed on a sticker on the timing chain end of the engine. The engine code CDAA has been abbreviated to CDA. As JoaoP has suggested, if someone who owns an Octavia II with the 77KW/105hp engine could post the engine number which is on the label on the timing belt guard of their car, it would help set his mind at rest.

On final comment for JoaoP. Your engine number on the timing belt guard is CAY A32958, not CAYA32958. Engine serial numbers are 6 digits long, and I read the A as being part of the individual engine number not the engine code.

So today I found myself on the dyno waiting to measure the performance of my CAYA37958 engine. Here are the results:

I think it is strange they use the CAY A37958 designation to refer to CAYC engines, but I am happy that everything is as it should

Still, I think it would be nice if another member would post a picture of the timing belt cover showing an Octavia with CAY A designation...

Edited 7 February, 201214 yr by JoaoP

Putting it on a dyno was the best solution for you. It really was the only way you could satisfy yourself.

There is really only a CAY engine. What makes the CAY engine a CAYA, CAYB or CAYC is the ECU.

Putting it on a dyno was the best solution for you. It really was the only way you could satisfy yourself.

There is really only a CAY engine. What makes the CAY engine a CAYA, CAYB or CAYC is the ECU.

yes... it is good to satisfy myself... but a picture from another briskodian with the timing cover would be nice.

Edited 7 February, 201214 yr by JoaoP

I promise you as soon as I get one in I'll take a picture

I promise you as soon as I get one in I'll take a picture

I heard you Thanks!

As promised, Octavia 1.6 CR

Only shows CAY as engine type

As promised, Octavia 1.6 CR

Only shows CAY as engine type

Many thanks. I also managed to get a look at a VW 1.6 engine. It also has CAY ###. No alphanumeric number after CAY though...

Many thanks. I also managed to get a look at a VW 1.6 engine. It also has CAY ###. No alphanumeric number after CAY though...

Your engine is a later build (Jan 2011) than the one Tech1e found (May 2010) so the number has gone past 999999.

Your car is a later build (Jan 2011) than the one Tech1e found (May 2010) so the number has gone past 999999.

Yes I think you are probably right. However, the VW I saw was from the month after mine.

I guess there is no point in complaining any further, lets enjoy the beautiful car that the Octavia is

Thank you all for your feedback and inputs.

In any case, -in the future- if ANYONE finds an Octavia with an engine SN like mine (CAY A...), feel free to post here a line about it.