Sudden lag during an overtake today. Is this normal?

[MrBeanPT]

I've had the car for more than a year now (a CT4s) and can definetly say that's the only real "issue" the car has. Mine does this every single time in Normal mode and it's really sad as I'd rather have the car instantly accelerate in 2nd gear than waiting for the car to stop acelerating, then downshifting, then accelerating again. Most of the times, I'm already doing 50, 60 or 70km/h and wouldn't need the downshift anyway.

I don't really understand if my car is different than normal or, if not, why Porsche decided to do it this way.

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[sbarker108]

This shift used to be much slower before the uPdate. Now it’s pretty snappy but when you’re not used to it, can catch you by surprise. Just drive in Sport mode all the time to avoid it.

I love this solution: Just drive in Sport mode all the time to avoid it.

 

[tchavei]

I've had the car for more than a year now (a CT4s) and can definetly say that's the only real "issue" the car has. Mine does this every single time in Normal mode and it's really sad as I'd rather have the car instantly accelerate in 2nd gear than waiting for the car to stop acelerating, then downshifting, then accelerating again. Most of the times, I'm already doing 50, 60 or 70km/h and wouldn't need the downshift anyway.

I don't really understand if my car is different than normal or, if not, why Porsche decided to do it this way.

I tested further and yesterday late night I was able to replicate. It doesn't happen when you're have your foot on the pedal (sending energy to the wheels) and then suddently floor it.

It happens when you lift your foot, start coasting and then floor it.

This scenario fits into the style of overtaking. You're 5km/h faster than the vehicle in front of you, as you get closer, you lift your foot and let the car coast while you check if the left lane is empty and you have visibility to overtake. The car keeps approaching the car in front of you and then you activate turn signal, swerve and floor the pedal... Lag, downshift and jolt.

If you don't coast before flooring the pedal, mine doesn't downshift

 

[MrBeanPT]

I tested further and yesterday late night I was able to replicate. It doesn't happen when you're have your foot on the pedal (sending energy to the wheels) and then suddently floor it.

It happens when you lift your foot, start coasting and then floor it.

This scenario fits into the style of overtaking. You're 5km/h faster than the vehicle in front of you, as you get closer, you lift your foot and let the car coast while you check if the left lane is empty and you have visibility to overtake. The car keeps approaching the car in front of you and then you activate turn signal, swerve and floor the pedal... Lag, downshift and jolt.

If you don't coast before flooring the pedal, mine doesn't downshift

It makes sense. I hadn't figured that out yet. In any case, I'd rather not have the downshift and have the acceleration immediately.

 

[Archimedes]

Sounds like you were in normal mode and the downshift in gears when you accelerate hard. It wont happen in Sport or Sportplus mode. I tend to stay in Sports mode almost all of the time unless the road is really bumpy, when you forget and leave it in normal that downshift jolt is not pleasant.

The downshift delay is tiny. No way someone would feel that as a hesitation or lag.

 

[Hirschaj]

The downshift delay is tiny. No way someone would feel that as a hesitation or lag.

I feel it all the time chief.

 

[Jono]

The downshift delay is tiny. No way someone would feel that as a hesitation or lag.

Really? Compared to the sports mode I think it is quite noticeable if you accelerate hard in normal mode.

 

[CxM]

I assume there's an efficiency drop if staying in sports/sports+ since it stays in lower gear?

 

[whitex]

I assume there's an efficiency drop if staying in sports/sports+ since it stays in lower gear?

For me the drawback of Sport all the time is an annoying high frequency whine from the transmission ~50mph which happens to be my cruising speed on a few routes around town.

 

[snstevens]

I would bet that it’s due to the collision avoidance and when you floored it, the car considered the car you were passing was still impeding and then took off when you cleared fully. What you describe ACC does all the time.

By chance were you a little early flooring it?

Very likely. This past weekend I was driving with the cruise control on at 65 mph, and in relatively heavy traffic, when the Taycan entered a left turn leading uphill, making the car on my right ahead of me appear for an instant to be in front of my car.

The Taycan responded by abruptly slowing down and I think it briefly gave the collision avoidance message (I was trying to figure out what happened so I’m a bit unclear on about that) and then as the turn completed the Taycan sped up again to my preset speed since there was no other car close in front of me.

I can definitely see how the collision avoidance system could affect you in a passing situation if you were close to the car in front of you when you accelerated. I’m sure you would have sped up again once you broke free of that collision detection situation.

 

[f1eng]

I had a reasonable length trip on a range of different roads taking my grandson to be shown around Red Bull Racing by an old colleague and friend (and serial GT3 owner he had picked up his latest touring on Monday) so tried a few things.

Mine definitely "kicks down" when flooring the throttle and I feel it but its nowhere near as slow as a typical auto or manual IC engined car.
It is also nowhere near as bad as the lag of any of the turbo cars I have driven or owned either.

I am so used to (and like) the coast on lift off I didn't like the Sport setting for general use both for that and the markedly poorer ride.
I did try hooliganing around a few corners and roundabouts on low traffic bits and Sport is definitely better for sliding the car, but not by that much, so again, not enough for me to leave it there.

Normal turns out to be a very well judged set of settings for my taste.

The car has great grip and balance!

Very OT!
It is 13 years since I retired from Formula 1 and the rules have changed a lot but I was staggered how many people there are now and how complex that allows them tomake the parts.
Williams GP Engineering was 23 people when I joined and we made the fastest car and won the Championship the following season and started to grow, we were fairly dominant for the next few years and grew to around 100 people before I moved.
Red Bull Racing does do their own power train but they have 1700 people and Mercedes the same.

Going to races to run the car is not quite such a personal experience any more.

 

[whitex]

I am so used to (and like) the coast on lift off

I'm pretty sure you can still coast in Sport, just turn off the recuperation (on PCM or by hitting the steering wheel button)?

 

[f1eng]

I'm pretty sure you can still coast in Sport, just turn off the recuperation (on PCM or by hitting the steering wheel button)?

I suppose it may be possible, but I didn't bother since the ride was noticably inferior to "Normal" and handling not enough better to compensate (for me).

 

[WuffvonTrips]

Very OT!
It is 13 years since I retired from Formula 1 and the rules have changed a lot but I was staggered how many people there are now and how complex that allows them tomake the parts.
Williams GP Engineering was 23 people when I joined and we made the fastest car and won the Championship the following season and started to grow, we were fairly dominant for the next few years and grew to around 100 people before I moved.
Red Bull Racing does do their own power train but they have 1700 people and Mercedes the same.

Going to races to run the car is not quite such a personal experience any more.

? So much for development budget caps! I assume that some of their F1 investment benefits the overarching Mercedes group, but is there any wider benefit from RBR?

 

[f1eng]

? So much for development budget caps! I assume that some of their F1 investment benefits the overarching Mercedes group, but is there any wider benefit from RBR?

I think the budget cap is the best way to limit teams, if it can be policed adequately (and leaving the 3 highest paid out of the cap makes a mockery).
When I started the “budget cap” was really low because funding was difficult to come by, but after the cigarette companies and then the big car companies got involved clever people making a good car for less money ceased being a criterion and huge sledgehammer budgets allowed some teams that weren’t that good to steamroller better ones (IMO).

I have never sought to see motor racing sponsorship as anything other than advertising.

I have never expected developments in racing to improve road cars (and it doesn’t much if at all).

It is just product placement like sponsorship of any other sport.

Red Bull is a very profitable product

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