As i understand that you have Maruti, Hyundai, Kia, Tata, Mahindra in Cooch Behar with major hub as Siliguri having near almost every dealer showroom placed
Kind appraise that 120 Kms is still a distance and recommended to opt for one which has local presence wth service center in Cooch Behar
Basis facts mentioned about
> low noise & vibration
See available choices in sub 15 Lakh Budget are pretty few including
1. Kia Carens
2. Maruti Ertiga
3. Maruti XL6
4. Mahindra Marazzo
5. Renault Triber
While Marazzo is diesel only and certainly feels more noisier with cabin insulation feels medicore and diesel engine clatter do enter in cabin at higher speed.
Renault Triber 3 cylinder engine is noiser too with much higher engine NVH as against refined and silent Carens / Ertiga & XL6 Engine
So options left are in form of
> Maruti Ertiga, XL6
> Kia Carens
Now in between Ertiga and XL6 - will definitely pick XL6 Alpha
a. 6 Seater captain layout with independent armrest, slide and recline is the biggest strength for utmost comfort for 2nd row passenger
b. Feels more premium in Interiors and Exteriors over Ertiga
c. Ingress and Egress is relative easier in 3rd Row too
Engine is super silent, 16 Inch wheels offers good stability,
Although is a 3 star car in build but has active safety of ABS with good brakes, ESP with Hill Assist and passive safety of 4 Airbags.
So careful drive by following speed limits is mantra to ensure good safety for passengers.
Feel like even better product - get on to Kia Carens Prestige GDI
a. Suspension feels even more comfort oriented over Ertiga, will love passenger comfort in car
b. Although a 7 Seater but even more spacious in 3rd Row with better legroom space, better placed 3rd Row seat and one touch tumble feature on 2nd Row in Kia Carens is even more easier to enter in 3rd row
c. More Fun to drive in Turbo Petrol Engine as against 1.5 Litre Naturally aspirated Petrol Engine
d. Has even Curtain Airbags
Do note that Kia Carens too scored in 3 star rating - but mantra lies in bottom line of safe and controlled speed drive. As driver skills and speed limits comes first and foremost over any safety feature in car.
If seek space, superior performance, comfort with more fun element - Kia Carens is an excellent pick
Yes build scored low but car stuffed with active and passive safety features and if believe in controlled speed drive - can definitely consider this car.
Else if seek superior comfort on 2nd Row as prime factor and more features in lesser price with near similar build then can consider XL6 Alpha over Carens, although as product per se Carens has an edge over XL6
Hope should help. Have test drive to experience.