XC70: General 0-60

[yostumpy]

Yet another....I was just wondering, post....

When Volvo establish their 0-60 figures , say 8.2 sec in a D5, What gearbox mode do they use? D?..........S?.........+/-? Anyone know, and what the difference would be for all 3.

[Rocinante]

Originally Posted by yostumpy

Yet another....I was just wondering, post....

When Volvo establish their 0-60 figures , say 8.2 sec in a D5, What gearbox mode do they use? D?..........S?.........+/-? Anyone know, and what the difference would be for all 3.

Get the stopwatch out....

[Tatsfield]

Originally Posted by yostumpy

Yet another....I was just wondering, post....

When Volvo establish their 0-60 figures , say 8.2 sec in a D5, What gearbox mode do they use? D?..........S?.........+/-? Anyone know, and what the difference would be for all 3.

I suspect that when testing manual gearbox cars, auto journalists rev the engine, hold the car against the brakes and red line the revs to breaking point but when they test an auto, they put the car in Drive and drive it. They then announce how poor the performance of the auto is compared to the manual gearbox. Auto boxes do tend to be a little slower but how you drive the auto box can make a big difference. All out abuse of the box would probably be achieved by using the manual gear override and not changing until the transmission program limits the revs at the top end but it's hardly representative of an auto box!

[ferg55]

Originally Posted by yostumpy

Yet another....I was just wondering, post....

When Volvo establish their 0-60 figures , say 8.2 sec in a D5, What gearbox mode do they use? D?..........S?.........+/-? Anyone know, and what the difference would be for all 3.

In theory, when the throttle is at max, D & S would return the same 0-60 as either will change gear at the optimum time for fastest acceleration.

The difference is when the throttle isn't at max - D will change gear quicker to keep the revs down, S will change later to keep the revs up.

But at max throttle, the TCM will disregard the selected mode, and do what's necessary for max acceleration.

[Volvocano]

Originally Posted by Tatsfield

IAuto boxes do tend to be a little slower but how you drive the auto box can make a big difference.

Not so anymore, with 6,7,8,9,10 speed automatic transmissions becoming more and more common the autos are quicker due to always having shorter gearing through the gears and less space between the gears keeping the engine in the sweet spot.

[XC90Mk1]

Originally Posted by Volvocano

Not so anymore, with 6,7,8,9,10 speed automatic transmissions becoming more and more common the autos are quicker due to always having shorter gearing through the gears and less space between the gears keeping the engine in the sweet spot.

Yes more modern boxes are faster.

What’s also interesting is that there was a time when auto boxes had poor longevity, cost a fortune and a clutch for a manual was £200 with someone coming to your drive to change.

Now manuals are unreliable with DMF failures not unknown and they wear out as a consumable costing £1,200+ and auto gearboxes tend to go on and on.

I wouldn’t have another manual.

[100K+]

Originally Posted by XC90Mk1

I wouldn’t have another manual.

Having railed against auto boxes for over 40years I have been forced to accept one on the V60 on order.
Still not happy about it,but will let you have comments after say 6 months,don't want to be hasty
Cheers Bob

[Tannaton]

Originally Posted by XC90Mk1

Yes more modern boxes are faster.

What’s also interesting is that there was a time when auto boxes had poor longevity, cost a fortune and a clutch for a manual was £200 with someone coming to your drive to change.

Now manuals are unreliable with DMF failures not unknown and they wear out as a consumable costing £1,200+ and auto gearboxes tend to go on and on.

I wouldn’t have another manual.

I did a post some years ago on whole life costs on XC90 and with a good level of maintenance on an Autobox (fluid changes every 36k) the costs are broadly the same as a manual needed clutches say every 150k

DMF failures are fairly rare, and usually on cheap replacement components or "chipped" cars where the torque exceeds that which the drivetrain was designed for.

[Tatsfield]

Originally Posted by 100K+

Having railed against auto boxes for over 40years I have been forced to accept one on the V60 on order.
Still not happy about it,but will let you have comments after say 6 months,don't want to be hasty
Cheers Bob

Ex manual drivers hate to admit they like auto boxes but the truth is that with a powerful engine the car does everything you need and you can stop building your left leg calf muscles and rowing the damn thing down the road in towns with the gear lever. A lot of ex manual owners driving autos today would shyly admit that they wouldn't change back! My Polestar XC70 with 130 bhp and a Geartronic box just goes the way it needs to and I can concentrate of the interesting parts like steering and navigating and let the gearbox do what it does without my constant interfering.

I always say to manual drivers, imagine that the first cars were invented with auto boxes and most cars had them. How would a car salesman try to sell you manual transmission? "Well there's an extra pedal to press even though you only have two feet and if you don't move this strange lever about when driving to match the road speed to the engine speed the car will shudder and stall and you have to do this by taking your hands off the wheel at busy times like corners, traffic congestion and times when you'd be safer with both hands on the steering wheel. Doesn't that excite you sir? Wouldn't you like to buy one like that?" Few people would.

[eagle58]

Be stuck in slow moving traffic for a couple of hours and all desire to want a manual gearbox goes out of the window.