Lag in low gears

Anything F-Type related......
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MrZippy
Posts: 4
Joined: Mon Apr 25, 2022 10:59 am

Post by MrZippy »

Hi, I own a 2.0 2019 F Type which is essentially a high days and holidays car. I did however use it on a recent week break in the Cotswolds. During this trip I noticed a lag when the car changes gear at low speed, especially going up inclines (not steep as such). This is my first automatic and I am more used to the progression of power delivered through manual gear changes. Is this just a case of getting used to automatics or is this abnormal. Accelerating away from a standing start, it seems to 'pause' as it changes up. Quite weird. Fine when it cruises in high gears. Anything to concern me?

stefan9107
Posts: 274
Joined: Sat Jun 17, 2023 3:57 pm
Location: West Sussex

Post by stefan9107 »

MrZippy wrote: Fri Nov 17, 2023 4:26 pm Hi, I own a 2.0 2019 F Type which is essentially a high days and holidays car. I did however use it on a recent week break in the Cotswolds. During this trip I noticed a lag when the car changes gear at low speed, especially going up inclines (not steep as such). This is my first automatic and I am more used to the progression of power delivered through manual gear changes. Is this just a case of getting used to automatics or is this abnormal. Accelerating away from a standing start, it seems to 'pause' as it changes up. Quite weird. Fine when it cruises in high gears. Anything to concern me?
Hi Zippy. We'll likely need a bit more detail for people to help out.

- How long are we talking as far as a pause? A split second or is it something a bit more lasting?
- You say it happens at low speed when pulling away from a standing start, does that mean it only happens between 1st and 2nd gear?
- There a number of factors that affect the timing of automatics with how much throttle it was being given more of a decision factor over speed... would you say you were pulling away with urgency or more of an eco slow eeking out each gallon in traffic kind of acceleration?
- I don't have a 2.0 but I assume like the others it has different driving modes like dynamic etc and flappy paddles. What mode were you in? Was the gearbox in normal or sport (lever pushed to the side or not).
- If you were in all the standard normal modes, if you put it in sport or dynamic etc does it change/remove the lag?
- Does it happen when you change gear manually using the paddles?

If you could answer those I'm sure it will help people tell you if its normal or not.

I suspect it probably is normal and nothing to worry about, as the F-Type has more of a slower traditional auto with a torque converter etc. As opposed to the quick firing dual clutch gearboxes that although more jerky during low speed maneuvering, feel more similar to a manual and remove the efficiency losses. The ZF box in the Jag is one of the best out there and is found in SOOOOOO many luxury/sports cars these days. I've been driving auto's of all different types for going on 10 years now, and I remember when I got my first one (which also had a ZF), it took me a while to get used to it. You have to remember that there is a system with an algorithm trying to figure out what you are doing and when to change and how fast to deliver that change. Not saying it's the case here, but a bit more urgency can sometimes help the car make those decisions and know what you want from it, whereas hesitation and super slow acceleration would make it think that you want the slowest smoothest change possible.

As said though, if you can provide a bit more information that'll narrow down if its an issue or just a qwerk of the type of gearbox that it is.
F-Type R Coupe AWD (MY2016) - Dark Sapphire
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scm
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Location: Southampton, UK

Post by scm »

The gear box adjusts to your driving style - if you're pottering about the upshifts are made at lower revs and can be a bit "lazy". If you're pressing on it'll hold the gears longer (redline at WOT!) and shift more crisply. I've found my box to shift just about when I'd do it with a manual - it's as if it reads my mind!
MY18 F-Type V8 R AWD in Glacier White
Lots of leather and toys, and loads of noise!
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