Replacement of a petrol engine with a diesel engine was allowed as current repairs and, alternatively, as revenue expenditure.

Expenditure on replacing a petrol engine with a diesel engine in a business car was treated as allowable because the governing test is whether the outlay preserves and maintains an existing asset or brings into existence a new asset or a new advantage in the capital field. The Tribunal found that the replacement did not create a new asset and only improved the vehicle's running efficiency in business use. It therefore allowed the claim primarily as current repairs under section 31 and, alternatively, as revenue expenditure under section 37.

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Issues: Whether expenditure incurred on replacement of a petrol engine with a diesel engine in a business car was allowable as current repairs under section 31 of the Income-tax Act, 1961, or otherwise as revenue expenditure under section 37 of that Act.

Analysis: The governing test is whether the expenditure is for preserving and maintaining an existing asset, or whether it brings into existence a new asset or a new and different advantage in the capital field. The Tribunal noted that the replacement did not create a new asset and merely improved the running efficiency of the vehicle in business use. It also accepted that, even if the claim did not fall strictly within current repairs, a non-capital expenditure not covered by sections 30 to 36 could still be examined under section 37.

Conclusion: The expenditure was held to be allowable, primarily as current repairs under section 31, and in any event as revenue expenditure under section 37, in favour of the assessee.

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