I've Ertiga 2019 model and I've driven 46000 km
Except for built quality, everything is good
Gearbox 9/10
Steering feedback 5/10
Space 9/10
Comfort 8/10
Boot space 9/10
Engine performance 8/10 never found under power
Mileage 13 km/l in the city and up to 19 on Highway
Maintenance of around 8000 per year
Service center experience 8/10
Built quality 4/10 Very poor (outer body)
The interior design of Top model 8.5/10
Value for money 9.5/10
Resale value 9/10
All of these are WRT its price