We drive four significant ghat climbs regularly, and they are not interchangeable. What follows is what a fully loaded Ertiga actually does on each, which is a different question from what a car does empty on a test drive.
What an MPV does well on a ghat, and what it does not
The instinct is that a hill road wants an SUV. In practice the trade works out better than people expect.
In the Ertiga’s favour: it rides more softly over the broken patches that ghat roads accumulate, and it is narrower and easier to place on a tight bend than something wide — which matters more than power when a bus is coming the other way.
Against it: ground clearance is 185 mm, which is fine for a surfaced ghat and not for an unmade track. And with a full load the car is working, which you notice as pace.
That last point is the honest one. A loaded car climbs more slowly. The engine spends longer in a lower gear and the ascent takes longer than the distance implies. That is physics, not a fault, and the practical consequence is to allow real time rather than map time.
The four climbs, ranked by what they ask of the car
Valparai, from Aliyar — the hardest. A dense sequence of tight hairpins gaining height fast through the Anamalai slopes. A loaded car works hard throughout and the journey takes far longer than 100 km suggests. Also the most beautiful, and the one where we most often suggest a larger vehicle for six adults.
Munnar, via Marayoor — the longest and most exposed. Not as relentlessly hairpinned as Valparai, but higher at the top and far more weather-dependent. The upper section clouds over from the early afternoon, which is why departures are early.
Ooty, from Mettupalayam via Kallar — the most forgiving. A long, well-surfaced climb with a famous sequence of bends. Busy at weekends and in season, which is the real constraint rather than the gradient. A loaded Ertiga handles it comfortably.
Kodaikanal, from Batlagundu — moderate. Shorter than the others from Madurai’s side, a steady climb, and genuinely fine with a full car.
Shorter climbs — Coonoor, Yercaud, Sirumalai — barely register.
The things that actually go wrong on a ghat
Not the car. In order of frequency:
Timing. Treating the climb as the last hour of a longer drive. It is its own leg, and it sets its own pace.
Weather. Afternoon cloud on the high approaches — Munnar especially — takes away both the visibility and the speed.
Traffic. Weekend queues at the bends on the Ooty road, which no vehicle solves.
Wildlife. The Bandipur and Mudumalai crossings on the Mysore side of the Nilgiris, and the Valparai approach through Anamalai, all carry animals on the road. Slower than the limit, and no stopping.
When we would put you in something bigger
Six adults on Valparai or the long Munnar climb. Three hours of switchbacks is a long time in the third row, and the honest answer is a larger vehicle.
For four or five people, on any of these climbs, an Ertiga is a good choice rather than a compromise — and on the narrow sections it is genuinely the easier car to be in.
The individual route pages carry the specifics for each climb, and the Ertiga page has the full picture of what the car is and is not.