Nice Family Car, But Sacrificed Performance

I purchased this car in December 2022 and have been extensively driving between Agra and Noida/Gurgaon, covering both highways and city roads. I've driven over 16,000 kms in 9 months and have had 3 services done. At the third service, the engine oil was changed. Here's an honest review: Performance: I find that the performance lacks a bit. My Swift Dzire actually has better power output than this car. The acceleration is okay, and it doesn't give the feeling of a big car. With just 2 members, the performance is good. However, when I have my full 6-member family in the car (4 men and 2 women), all weighing between 70-85 kgs, the car struggles to move from 80 km/h to 100 km/h. Going from 100 km/h to 120 km/h feels like a long journey. During this condition, the fuel average drops to below 15 km/l. (Though I'm not particularly concerned about mileage, I prefer driving at higher speeds as time is more important to me than money). Comfort: All the seats are really nice, with no issues whatsoever. The car is extremely spacious in all three rows. Both my younger brother and I (we measure around 5'10" in height) can comfortably sit in the third row. Utility: The utility is very high. My wife and I use the car for regular travel to the office (Gurgaon/Noida) and hometown (Agra). We pack our essentials in the third row with seats folded down, and it provides excellent utility. Disliked features: Interior: The interior feels like the Ertiga from the inside, especially in black color (I'd rate it 1 star out of 5). The dashboard design feels outdated (like old Japanese models). Tyre size: The tyres are small and look like toy tyres on such a big car. Touch screen: The touch screen on the Zeta model is very poor. It lacks inbuilt navigation, and connecting to a mobile via cable is necessary for Android Auto/iPhone CarPlay.