Are both the Audi A4 TFSI 35 and TFSI 40 virtually the same?

Are Audi A4 TFSI 35 and A4 TFSI 40 running cost the same (mpg, tax, emissions, insurance ) ?
Apart from HP 150 and 200, all data i see varies. Some suggest 35 is cheaper to run, others suggest there is no difference, in which case what is the point of splitting the same engine?

Asked on 17 January 2024 by Audi partner

Answered by David Ross
The Audi A4 35 TFSI and 40 TFSI use the same 2.0-litre turbocharged four cylinder engine, just with a different state of tune to provide 150 PS in the 35 TFSI and 204 PS in the 40 TFSI, as well as additional torque. As far as the official figures are concerned the 40 TFSI is slightly better with a claimed fuel consumption of 45.6mpg compared to 43.5mpg in the 35 TFSI, as well as fractionally lower CO2 emissions. In the real world this may not translate to a significant difference in terms of economy, the VED rate will be the same (assuming both are under the £40,000 premium) but you may find insurance costs are slightly higher for the more powerful 40 TFSI version.

The reason Audi use the same engine in two different guises is that it is cheaper to build many examples of the same engine with few or no mechanical differences while offering the customer a choice of power outputs and charging a different sticker price.
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