“Why Does My Tiggo 8 Pro Guzzle More Petrol Than It Should — Is Emissions to Blame?

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“Why Does My Tiggo 8 Pro Guzzle More Petrol Than It Should — Is Emissions to Blame?

If the car seems unusually thirsty for fuel — worse than the official mileage claims — could it be because the emission control system or exhaust/back-pressure setup is struggling with local fuel quality o r improper tuning? Could that lead to poor fuel-economy and higher emissions at the same time?

Talha Kyanii asked on 06 Dec 2025 09:23:16 am

1 Answer

6 views |

Gari Master - on 06 Dec 2025 09:24:35 am

Yes — many emission-control issues directly increase fuel consumption.
Common reasons the Tiggo 8 Pro may consume more fuel in Pakistan include:

Key factors:

Faulty O2 sensor → forces rich fuel mixture

Partially clogged catalytic converter → causes back-pressure and reduced efficiency

Dirty air filter → reduces airflow, increases fuel usage

Bad fuel quality → incomplete combustion, higher consumption

Turbo not spooling correctly due to carbon deposits

Result:
High fuel consumption usually pairs with higher emissions, so both problems are connected.

What to do:

Use better fuel RON 95/97

Clean o r replace air filter

Get O2 sensor readings checked through OBD

Check catalytic converter for clogging if mileage has crossed 40,000–60,000 km