[Resolved]  Tata Motors — gear shift lag in tiago xza amt version

Address:

600054

Team,

I bought tata tiago xza amt car on 19 march 2018 and now after almost 11 months and 25000 kms o[censored]sage, i am raising this complaint regarding the gear shifting lag in this version. Apart from this issue, the car's performance is excellent. I raised this issue several times with my tata motors service center, but of no use. They one need is positive feedback all the time and that too 10/10 in each parameter.

The issue:
Let's start from the moment you sit in the car and push off. Slotting the gearbox in drive mode itself is something that won't happen all the time. At times, you slot the lever down and press the accelerator only to find out nothing happens. This is despite the fact that the lever gear selector is in right place, the gearbox is still stuck in neutral. The same can happen randomly when you select reverse and the remedy is that push the gear selector in neutral and then back again in forward or reverse mode. I know, it just takes a couple of seconds but such inconsistency in today's age in a car in this price-bracket is hard to digest. Once on the move, the amt is slow to respond and while this is a problem area for amts in general, the one in tiago feels slower. It's as if there's a man under the hood who shifts a gear every time you ask for it.

Problem is that while you're going up an incline at about 25 kmph, the gearbox doesn't seem to understand the load on the engine and will simply shift up into 3rd gear, dropping revs to point where the car struggles to continue upwards. This can be quite annoying in traffic, particularly on congested flyovers. At this point, some might think that a heavier usage of throttle should rectify things and while this is right for most amts, it doesn't work that way in the tiago. First of all, applying the same amount of throttle at different times has different results in acceleration. Acceleration at times just doesn't happen for as long as two seconds the gear box has no clue about gear shifting and struggles to decide on which gear to slot in.

Surprisingly, at times acceleration comes in a surge after a long lag, leading to sudden acceleration, which could be risky in dense traffic. I have almost hit few cars waiting in front of me during heavy morning or evening traffic. If this was a permanent trait, i wouldn't have much problem as gradually any user would get used to the throttle application. However, with unexpected outcomes intermittently, there's no pattern to get used to.

Even at highway speeds, at times the gearbox is too slow to respond to kick-downs, especially during overtaking the other vehicles, which means that you'll again need to take control of the gears manually, thereby defeating the purpose of buying an amt. Shifting manually is fine and lets you rev to about 5, 500 rpm but the shifting isn't smooth and shift shocks are quite prominent, both in automatic as well as manual mode.

I did read reviews of xza and almost all of the amt users have this issue. If this is a common problem in amt, then why tata motors still have not rectified the issue and called in the faulty cars and replace the software?

Any assistance is this regard will be of more help.

Thank you.

Regards,
Jayakumar s
Dealer: concorde motors, ambattur, chennai
Mob: [protected]