Tata Hexa: MT Engine Performance
2.2L Manual Transmission
We haven’t got to test the 4x4 version of the Tata Hexa yet. Hence, this review will primarily focus on the 4x2 XT. So, the engine is same old 2179 cc in-line 4-cylinder block that we have been seeing since around a decade in Tata Safari 2.2 DiCOR. What’s changed? The turbocharger, pistons, block etc. are all upgraded to deliver higher power and torque output along with a 1.5 Lakh Kms timing chain life, of VARICOR 400 unit, which now churns out a peak power of 154 BHP @ 4,000 RPM along with an impressive peak torque of 400 Nm that is well spread right from 1,700 to 2,700 RPM. Impressive figures? Well, let me bring the weight of 2280 Kilos into the equation and that’s when we discover that the power to weight ratio (check specifications table for reference) is worse than even the Aria. Yup, this is the only car whose facelift actually gained weight. Many people gave me an argument that it’s a new engine and it can manage everything. Well, even underpowered trucks also do manage, what about the overall efficiency factor, Tata Hexa needs to go on a diet and requires to shed at least 300 Kgs to actually make the enthusiasts sit and listen and even queue up for getting one for them. A six-speed gearbox is provided in both manual and automatic trims, but the auto transmission isn’t yet coupled to an AWD, that only the manual XT trim gets (Yes, no option of AWD for base or mid trims – Tata loses 5 points here too).
Starting Up
Already disappointed by the key, I get into the Hexa, press the clutch and fire the engine. Boy, I was dead! This car was vibrating like hell. A quick call to PR, a quick inspection and it was discovered that there is mud stuck everywhere (thanks to the media house which drove before us). A quick diagnose was done and I’m back into the driver’s seat. Press the clutch, fire the engine and like any ladder frame SUV, everything vibrates, gear box moves on its mountings and rocks the lever – then all calm. NVH is good, I saw the tightly packaged bonnet and was vary that NVH can be a bit bad since the engine is a bit too close to the firewall (everything is too close to each other), but nothing like that. I was in for a surprise then. I quickly recalled the numbers, made a count that this car weighs 2,280 Kilos and hence it will be slower than a Mahindra XUV500, then I hit the road. Clutch is light and the gearbox is still typical Tata, short gates, long throws and a bit notchy. Oh yes, this is when I discovered that engaging first gear means a lot of stretch and the people with laid back driving position are going to hate that thing in tight city drives and steep hilly ones. That said, overall driving experience has been good. I started straight with the worst mode, the ‘comfort’ mode; it was still a well acceptable performance, more discussion about modes at a later stage.
I released the light clutch (It’s hydraulic and it will tighten with time, but Tata A.S.S. is brilliant at honoring warranties, and they love changing clutch – ask any Storme owner), keeping in mind the engine response of XUV500 and weight of Hexa, I was surprised. It didn’t bog down at all or struggled to move, it simply started moving forward. I engaged the second gear and started releasing the clutch, again it was same, third gear and some vibration crept in – yeah, revs went down. But it didn’t bog down at all, I’m in third gear and the anti-stall is holding the engine slightly above the idle. Then I press the accelerator pedal, all the way to 4750 RPM, where the rev needle stops moving down south. It took me over 15 minutes to exactly understand the power delivery (BTW third gear felt best for the job), but was I impressed? Well, partially. First of all, this is not a slouch at all. As per the specification sheet, the 2.2L block is churning out 400 Nm of turbocharged twist at 1700 RPM. What does that mean? A lot of turbo lag under that number? Wrong. When you press hard at the idle, the progress will be slow (it’s a 2350+ kilos 2.2 diesel – with your weight included), it’s around 1350 RPM (Tata, your RPM marking is bad, 5 partition one was best) that you start feeling that yes, there is some punch (you can very easily manage 4th at 50 kph under sedate driving, even 6th at 70 kph). Progress further and around 1500 RPM mark, the engine starts giving you slight response, move further and then you are like; where is the kick? This isn’t a violent turbo, everything comes up in a very linear manner and the progress is strong. So, anything above 1500 and below 4000 is where you would like to always keep your Hexa into. That said, if you guessed that drivability is good, then you are absolutely right. Frequent gearshifts are seldom required and if you are a sedate driver, then you will seldom get a chance to complaint.
Sixth cog is tall, 100 Kph comes under 2000 RPM, maybe 1900 and 120 Kph comes around 2250 RPM, or maybe 2300 (needle was below 2330 or 1/3rd mark). This is where you will actually appreciate Hexa more than anything money can buy under Rs.50 Lakh. Doing 120 Kph on Yamuna Expressway was a breeze. Brilliant NVH, engine at the peak of its torque and a suspension which simply dismisses every single undulation or expansion joint section (Yamuna expressway, every bridge makes other cars tell you that it was an expansion joint). That said, Hexa engine isn’t an urgent performer like the 2.2 mHawk in even Scorpio (XUV500 is altogether different) but the performance is adequate, the revs don’t do rise as urgently as they do in the Mahindra, but it’s still free revving for a diesel, especially if we look at the engine response and the weight it has to pull. Someone told me that XUV500 leaves the Hexa in dust. Let me be very, very clear that it isn’t true. No matter how much the numbers favor XUV, just put a Hexa in dynamic mode and start driving. Yes, the Hexa will get overtaken but won’t be left in the dust at all. In fact, dare I say - the performance is more or less at par, just that you need to keep the engine between 2000 and 4000 RPM. Overall highway overtaking performance is adequate and it will never break into sweat, causing the same to driver.