Kia Sonet review: the segment’s options arms dealer, with one load-bearing asterisk

The Kia Sonet’s market position can be explained in one sentence: it gives you more car per rupee on the parts of a brochure people photograph, and asks you to accept less on the part they cannot see. Three weeks with the GTX+ dual-clutch and a week in the iMT around Delhi-NCR established both halves of that sentence pretty efficiently. This is a review of a very good product trapped in a persistent argument about stars.

The turbo is the class yardstick, and it isn’t close

The 998cc three-cylinder makes 120 bhp at 5,500 rpm and puts 172 Nm on the table from 1,500 all the way to 4,000 — a plateau wide enough that the turbo feels like it is cheating the displacement figure. Off the line the Sonet squats and launches with a kerb weight of only 1,275 kg doing a lot of quiet work, and in the 40-90 km/h band that constitutes most of Indian driving, it is the car that others move for. The catalogue’s 185 km/h top speed figure is, like all such things, a statement about the engine rather than a lifestyle.

Against the identically-specced turbo in the Hyundai Venue, the difference is the gearbox. Kia’s seven-speed dual-clutch executes kick-downs with a decisiveness that shames most human drivers: drop the throttle at 80 and it has found second gear before your passenger has finished bracing. The iMT is clever and keeps the clutch out of traffic at walking pace, but it is a convenience device, not a performance one. The DCT is the real car.

You can forgive the Sonet almost anything for three seconds at a signals standstill. That is precisely the problem with reviewing it honestly.

Highway: quick, then loud, then quick again

On the expressway the Sonet remains the fastest thing in its class to a confident 120 km/h, and the cruise-engaged 15-16 kmpl band this sample catalogue reports for it makes even a turbo economical in the right foot. The complaints arrive after the speed: wind around the mirror caps at 120, and a coarse three-cylinder note through the bulkhead when the DCT drops you into the gears hard. The steering has decent weight at speed; directional stability is good until crosswind off the back of a truck reminds you of the tall body. Overtaking is never a negotiation in this car, which buys you a real safety margin on two-lane roads.

Ride and the second row’s grievance

The Sonet rides firm — flatter through corners than most rivals, and more composed than the Venue over mid-corner bumps on broken tarmac. But Kia has tuned the rear axle for the driver, and the second row pays the tax. Expansion joints arrive as a sharp report, and serial bumps set the bench buzzing. With 205 mm of ground clearance the car floats slightly when unloaded at highway speed, too. It is a competent, safe-feeling setup that simply never lets the back seat forget the road surface. That is the whole explanation for a comfort score of 4.0.

Space is the surprise: the 1,790 mm width makes the bench genuinely good for two adults and survivable for three, and the 392-litre boot is the biggest of any compact SUV in this catalogue. The load lip is low, which dog owners and IKEA shoppers will appreciate more than any feature on the options list.

Inside: the equipment floor is the entire sales pitch

Even the HTK at ₹9.89 lakh in this listing carries the 10.25-inch touchscreen and reversing camera that many rivals reserve for showcase trims. Climb the ladder and the GTX+ adds the digital cluster, ventilated front seats, ambient lighting, a cooled glovebox — a small thing that becomes a large thing in a May afternoon — and the Level-2 assistance suite. The fit and finish feel a class above the price, and the wide, flat dash architecture makes the cabin feel bigger than the exterior proportions suggest. The twin-specced 1.0 turbo manual HTX+ at ₹11.99 lakh is where this catalogue thinks the value peaks; equipment-wise it is a long way from home, but the drivetrain is the same car.

Kia’s connected app does remote climate start, which in Delhi is not a gimmick but a public-health measure. The wireless charger is slow and the car heats up on it in summer, which is every car’s fault, not Kia’s specifically.

Efficiency, honestly

Claimed 18 kmpl; we recorded 12.8 over the month on a mixed loop, bottoming at 11.3 in standstill traffic and reaching 15.6 with the cruise set at 100. The NA base cars do a couple of kmpl better in the city and a lot worse when loaded — which is the same trade the Venue makes. Nobody buys this car for the fuel bill, and anyone who does should read the Altroz’s numbers instead.

The asterisk you cannot option away

Six airbags are standard across the range here — the correct decision and worth saying plainly. What remains stubbornly average is the cage: a three-star Global NCAP adult score in this listing, sitting between the Venue’s three and the five-star Tatas at the same money. Driver assistance helps you avoid the crash and cushions the one you cannot. If safety is the load-bearing criterion in your household, the Sonet argument has to start and end at the GTX+ — and then it has to survive the fact that ₹16.20 lakh is no longer small-SUV money.

Verdict

The Sonet is the best-driving and best-equipped compact SUV in this catalogue, and it will always be sold against a number printed on a crash-test certificate. The turbo-DCT pairing is the class benchmark and the boot is the class winner; the ride is driver-biased and the structure is mid-pack. Buy the HTX+ turbo manual for value, the GTX+ if the budget is real and the safety suite is non-negotiable, and the iMT only if the commute is permanent standstill.

Who should buy it

Drivers who actually use the turbo — weekly highway runs, enthusiastic city merges — and who want the segment’s equipment ceiling without a bigger footprint. Families who need the 392-litre boot will quietly love this car for nine years. Who should not: five-star-or-bust households, rear-seat-first buyers with long commutes — the firm axle will out-vote the turbo in their review — and anyone whose budget caps at the naturally aspirated trims, where the Sonet becomes a nicely furnished average car.