66TDI Highway RPM (Possibly other models)

[trive2]

In the market for a car with the best possible highway economy for the 45km each way drive to/from work. My little Mazda 323 does 7.2L/100km highway and urban, because it sits on 3200rpm in fifth at 100km/h!

I've been looking at 6R Polo's and have my heart set on a 66TDI manual. However, I note that they are a gear short of the 77TSI manual and two gears short of the DSG's. I don't care what the gaps are between the ratio's as long as fifth gear is tall enough.

I've found it completely impossible to find a table of gearing ratio's for the 6R Polo so I can't calculate RPM. I'm hoping someone who owns these cars can tell me what RPM the cars sit at doing 100km/h in top gear;
- 77TSI 6-speed
- 66TDI 5-speed
- 66TDI 7-speed


On a side note, is there a 6R Polo fuel economy thread around here somewhere? Can find one for almost every other VW.

[alexaescht]

66TDI Highway RPM (Possibly other models)

From the top of my head, my sister's 66TDI Manual sits somewhere around 1800-2200 rpm at 100 km/h in 5th.

[alexaescht]

Actually, seeming you're concerned about fuel consumption, put it his way:

Last year, when we drove from Melbourne to Sydney in the Polo, we filled it up before we left (45 litres) and once we reached Sydney the trip meter still said we had 80 kms remaining. That's driving at 110 km/h the whole way.

[bigfoot]

From memory I averaged 5.9 last time I drove to Nelson Bay at 110km/h...ish (7 speed DSG)

Keep in mind that I first had to get from Drummoyne to the start of the F3 which is a pain.

Fuel consumption thread http://www.vwwatercooled.com/forums/...t=fuel+economy

[LukePolo]

In the market for a car with the best possible highway economy for the 45km each way drive to/from work. My little Mazda 323 does 7.2L/100km highway and urban, because it sits on 3200rpm in fifth at 100km/h!

I've been looking at 6R Polo's and have my heart set on a 66TDI manual. However, I note that they are a gear short of the 77TSI manual and two gears short of the DSG's. I don't care what the gaps are between the ratio's as long as fifth gear is tall enough.

I've found it completely impossible to find a table of gearing ratio's for the 6R Polo so I can't calculate RPM. I'm hoping someone who owns these cars can tell me what RPM the cars sit at doing 100km/h in top gear;
- 77TSI 6-speed
- 66TDI 5-speed
- 66TDI 7-speed


On a side note, is there a 6R Polo fuel economy thread around here somewhere? Can find one for almost every other VW.

I own a 77TSI 6 Speed, Love the drive and gear ratios.

Averages 2000RPM and 2400RPM between 100km/h and 120km/h in 6th gear.

Fuel average on the motorway at 110km/h (i do this every morning) 5.8lt/100km

[nomadx38]

On the freeway I get about 2200rpm at 100km/h (77tsi / DSG). My average city commute gets me about 6.0L/100 and the lowest I have got on a country run was 4.9.

You have to remember it's not just the gearing that effects fuel economy. It's also how efficient the engine is and wind/tyre resistance. On the freeway I cruise at about 3.9L (instantanious) if I floor it in 7th it will hit a max of about 10L/100 until the revs climb and more air/fuel can be burnt (by about 3000rpm it's about 28L/100)

Also I'm pretty sure the Polo's brochure does show gear ratios as I did the same thing when I was looking at my car.

[brad]

There's more to highway fuel economy than tall gearing.

Any of the vehicles you have mentioned will crap all over your 5 speed Mazda for economy.

A mate has a 77tsi DSG. Thrashes the pants off it & averages in the low 6s.

[Guest001]

Our 77TSI does 5.1 on a trip.

I would suggest a diesel wouldn't like constant short trips where it barely gets time to get fully warmed up and thus could suffer from DPF problems due to this.

A petrol one would give almost the same results with less potential problems.

[Transporter]

Our 77TSI does 5.1 on a trip.

I would suggest a diesel wouldn't like constant short trips where it barely gets time to get fully warmed up and thus could suffer from DPF problems due to this.

A petrol one would give almost the same results with less potential problems.

The technology improved and the latest TDIs don't have too many problems with the DPF in city driving conditions like they had at the beginning, when the technology was new.

My daughter's 2012 TDI Tiguan is doing very short trips almost daily. She drives 7km to work, right in the middle of Adelaide (it can't be more severe than that) and after 2 years the DPF is fine, the car should see at least 200,000km out of the DPF exhaust.

[LukePolo]

The technology improved and the latest TDIs don't have too many problems with the DPF in city driving conditions like they had at the beginning, when the technology was new.

My daughter's 2012 TDI Tiguan is doing very short trips almost daily. She drives 7km to work, right in the middle of Adelaide (it can't be more severe than that) and after 2 years the DPF is fine, the car should see at least 200,000km out of the DPF exhaust.

Could be doing it in Sydney.

[brad]

Could be doing it in Sydney.

Exactly what I was thinking. I've spent enough time in Radelaide to know that he hasn't a clue about what is "severe traffic"

[Transporter]

Exactly what I was thinking. I've spent enough time in Radelaide to know that he hasn't a clue about what is "severe traffic"

Are you saying that only you "Brad" knows what is a busy city traffic? Please, don't get too much ahead of yourself.

[alexaescht]

I would suggest a diesel wouldn't like constant short trips where it barely gets time to get fully warmed up and thus could suffer from DPF problems due to this.

A petrol one would give almost the same results with less potential problems.

The technology improved and the latest TDIs don't have too many problems with the DPF in city driving conditions like they had at the beginning, when the technology was new.

My daughter's 2012 TDI Tiguan is doing very short trips almost daily. She drives 7km to work, right in the middle of Adelaide (it can't be more severe than that) and after 2 years the DPF is fine, the car should see at least 200,000km out of the DPF exhaust.

If you're doing mainly freeway trips, go for the TDI.
If you're doing mainly short trips, I wouldn't go for the TDI – we experienced a few issues with prolonged short trips in the Polo due to the DPF, but now that the main driving it does is between Berwick and Bundoora on eastlink, there have been no issues.

[JonP01]

My little Mazda 323 does 7.2L/100km highway and urban, because it sits on 3200rpm in fifth at 100km/h! On a side note, is there a 6R Polo fuel economy thread around here somewhere? Can find one for almost every other VW.

Since you've already had your questions answered I'll just add a couple more things. A regular return trip for me on the M5 from Campbelltown to Mittagong and back gets me around 4.6 litres per 100 km in 6th gear at around 110 - 120 Kmh (indicated) the whole way. That is with just me in the car (so about 76 kg of weight) and Shell Vortex 98 fuel.

The 6th gear on the Polo is amazingly flexible (well the Polo is amazingly flexible period) and I can categorically state that my Polo pulls better in it's 6th gear at 90 kmh (or faster) than my Mum's Yaris does in 4th gear at any speed or my previous Mazda 2 did in 4th gear at any speed. I used to own a KJ Laser (1.6) which may or may not be equivalent to your old Mazda 323 and it's 5th gear on the freeway was still inferior to the Polo's 6th. And we are talking massively taller gearing on the Polo. Near 50 kmh per 1000 for this 6th gear whereas the Mazda and Laser used to do something like 33 kmh per 1000 RPM in 5th!

I remember when I was buying the old Mazda 2 and the little Fiat Punto 1.2 turbo diesel was on the market with all that torque (something like 220 nm from memory) which was a big deal for a light hatchback back in 2006. I remember the salesman telling me that he only needed to drop the Fiat to 5th gear up a steep hill just outside Mittagong. I know the hill he is talking about as I always used it as a benchmark for every new car I have owned. And the petrol Polo sails up that hill on about 20% throttle in 6th gear at an indicated 120 kmh and could easily accelerate up it in that gear. Yet this diesel with far more nm had to be dropped to a lower gear.

I haven't driven the Polo diesel but given the ease and pulling power of the 1.2 petrol I think the petrol tends to make a case for itself and it would be a rare circumstance where the diesel would be a better bet (maybe huge cross country k's per year, in which case I'd be buying a Jetta or even a Passat anyway).

To put things into perspective with the 77TSI Polo, I've had a pretty decent drive of a Ford XR5 turbo and the only differences between the two cars are noticeable once you get over 5,000 RPM where of course the XR5 Turbo delivers on it's superior power to weight ratio. And the Polo has a better throttle response, probably due to it's very low friction design. That says a lot for what isn't even marketed as anything other than a mass market, basic cheap car.

[Transporter]

If you're doing mainly freeway trips, go for the TDI.
If you're doing mainly short trips, I wouldn't go for the TDI – we experienced a few issues with prolonged short trips in the Polo due to the DPF, but now that the main driving it does is between Berwick and Bundoora on eastlink, there have been no issues.

Too late mate to take your advise.
Since 2008 we have done almost 100,000km in Touareg V6 TDI.
2 Tiguans TDI, Amarok TDI all been used mainly for the short trips, without any issue.
Just change the engine oil every 6 months.

What was wrong with your Polo? The DPF sensor?