Reale Unterschiede zwischen TDI und TDI PD -welche ? | Posts 32+

Bertil wrote:
By the way, the G4 with the 74 kW engine only has a top speed of 178 km/h (manufacturer's specification), while the Polo is stated to have 188 km/h.

Hello Bertil,

You are mistaken this time; according to the manufacturer's specifications, the Golf IV with a 74 kW TDI engine and manual transmission has a top speed of 188 km/h, both for the sedan and the station wagon.

With my sparsely equipped 3-door car, I reach a little over 200 km/h according to the speedometer, which wonderfully confirms Ulf's theses about the advantages of lower power-to-weight ratio.

Similarly, regarding the manufacturer's specifications for the acceleration from 0 to 100 km/h:
Limousine: 1291 kg - 11.3 seconds.
Variant: 1415 kg - 12.7 seconds.

Bertil wrote:
The 74kW PD engine has the highest torque of all 1.9 TDI engines from idle speed, and its maximum torque is achieved at the lowest RPM across the entire range.
This, combined with the optimally tuned EUH transmission, results in a very harmonious power delivery – it feels like stretching out a long rubber band. I've never been able to move a car so quickly while shifting gears so lazily; just put it in fifth gear and you're done.

For the Golf, the AXR engine is, in my opinion, the most optimal choice. At this point, I would like to thank Bertil again for the articles here on the forum, which led me to choose this particular engine.

Tobaran wrote:
Hi professionals...

Lately, I've been looking for a new used car...
specifically for a VW Passat TDI PD with 115 horsepower.

What works well in the Golf is definitely too little power for the Passat (74 kW TDI), in my opinion. The top speed according to the speedometer is 185 km/h, and you have to shift into fourth gear when overtaking, otherwise the car doesn't accelerate properly. I would advise against the 74 kW engine for the Passat; with the 96 kW engine and a 6-speed transmission, you are much faster and more economical. Also, the advantage of a D4 insurance class that the 74 kW Golf has is lost in the Passat, which still has an EU3 rating. Just wanted to share this as advice for other potential Passat buyers.

Best regards, Marcus.

Nuckelpinne_72 wrote:

Bertil wrote: Quote: By the way, the G4 with the 74 kW engine only has a top speed of 178 km/h (manufacturer's specification), while the Polo is stated to have 188 km/h. Hello Bertil, You are mistaken this time; according to the manufacturer's specifications, the Golf IV with a 74 kW TDI engine and manual transmission has a top speed of 188 km/h, both for the sedan and the station wagon. ...

Ouch... Right. And I drive one of those myself...
I probably mixed up the 1Z with something else... I think it was 178 in that case.


I can only confirm your statements about the "rubber band effect" with the 74kW motor. It's not spectacular, but it's perfectly adequate.
Even with a trailer attached, this is more than enough power. The climb up the Werratal valley on the A7 highway (Kasseler Berge) can be easily managed at 100 km/h (yes, my combination vehicle is approved for that speed).
Only the 5th gear is a bit too long for use with trailers or other towed vehicles.

What might be acceptable in a Golf is definitely too little power for the Passat with 74 kW TDI, in my opinion. The top speed according to the speedometer is 185 km/h, and you have to shift into fourth gear when overtaking, otherwise the large vehicle doesn't gain enough momentum. I would advise against the 74 kW engine for the Passat; with the 96 kW engine and a 6-speed transmission, you are much faster and also more economical. Also, the advantage of a D4 rating for the 74 kW Golf no longer applies to the Passat, which still has an EU3 rating.

Well, considering how well the Touran performs with the 74 engine, your statement surprises me a little.

Best regards, WarLord.

Warlord wrote:
Well, when I think about how well the Touran works with the 74 machine, then your statement surprises me a little bit.


The engines and transmissions are very different despite having similar performance.

The 77kW EU4 engine with a 6-speed gearbox in the Touran is an evolution of the AXR engine with 74kW EU3 D4 and a 5-speed gearbox found in the Golf, which itself followed the 74kW ATD EU3 engine. The equivalent to this is the AVB engine, which I have criticized, a 74kW EU3 5-speed engine for longitudinal installation in the Passat and Audi A4.

'I drove this engine for a few months about three years ago in a then-new 3BG, and I was surprised to find that very little has changed with this engine option in the Passat since then. A colleague had to exchange his 96kW Passat from Europcar due to a sale, replacing it with a brand new one with 74 kW (with mirror indicators and a gray dashboard).'

We drove a long distance together to pick up my Golf from the workshop; everything is as it was three years ago: far too little power in fifth gear. To overtake, you have to rev the engine inefficiently in fourth gear, and it's limited to 185 km/h.

My colleague did the same thing, because he was told something about 'technical improvements' during the exchange.

On the way back, I easily left him behind in my Golf, which he hadn't believed before.

So, the TDI models with around 100 horsepower differ significantly. If you're interested in one, test drive it to see if it meets your expectations.

You can also find details about the differences in posts by Bertil.

Best regards, Marcus.

Well, even in my Touran, I can overtake in fourth gear (until the power runs out, which happens quite abruptly around 4,000 RPM). In that situation, the 1Z engine feels a bit more responsive and smoother. My Passat (with the 1Z engine) struggles to do that in third gear (again, until the power runs out, but by then the overtaking maneuver is usually already complete).

Best regards, WarLord.