In February 1996, the respondent sold the appellant a new 1996 model Mercedes Benz E 320 A Sportline motor vehicle in terms of a written contract. The vehicle was to be delivered to the appellant at Durban at the respondent's expense. The respondent arranged for the vehicle to be driven under its own power from King Williams Town to Durban with its odometer disconnected, so that when delivered, the odometer indicated 160 km instead of the true 920 km. The appellant was unaware the vehicle had been driven in this manner. The appellant alleged he had been assured the vehicle would be brought to Durban by road transportation carrier, not driven under its own power. The appellant only became aware the vehicle had been driven as described after delivery, when he noticed minor damage or defects caused by the driving. The written contract contained a clause (clause 8) stating the purchaser agreed the vehicle was new notwithstanding that it may have been driven under its own power with or without distance recorded on the odometer from the plant to the place of delivery, for demonstration purposes, or for pre-delivery testing.
The appeal was dismissed with costs.
The test for whether malperformance of a contract justifies cancellation by the innocent party, in the absence of an express lex commissoria, entails a value judgment by the Court. It is essentially a balancing of competing interests - that of the innocent party claiming rescission and that of the party who committed the breach. The ultimate criterion must be one of treating both parties, under the circumstances, fairly, bearing in mind that rescission, rather than specific performance or damages, is the more radical remedy. The question is whether the breach is so serious that it is fair to allow the innocent party to cancel the contract and undo all its consequences. The breach must go to the root of the contract, affect a vital part or term, relate to a material or essential term, or constitute a substantial failure to perform. More generally, the breach must be so serious that it would not be reasonable to expect that the creditor should retain the defective performance and be satisfied with damages to supplement the malperformance.
The Court noted (citing Aucamp v Morton 1949 (3) SA 611 (A)) that it is not possible to find a simple general principle which can be applied as a test in all cases for determining when rescission is justified, because contracts and breaches of contract take so many forms. Each case must be assessed on its own facts and circumstances. The Court also observed that a tacit term is an unexpressed provision of the contract which derives from the common intention of the parties, as inferred by the Court from the express terms of the contract and the surrounding circumstances (citing Alfred McAlpine & Son (Pty) Ltd v Transvaal Provincial Administration 1974 (3) SA 506 (A)).
This case is significant in South African contract law for articulating the test for determining when malperformance of a contract justifies rescission in the absence of an express cancellation clause (lex commissoria). It establishes that the determination involves a value judgment by the court, balancing the competing interests of both parties and assessing whether the breach is so serious that it would be fair to allow the innocent party to cancel the contract and undo all its consequences. The case reinforces that rescission is a more radical remedy than specific performance or damages, and therefore requires a serious breach. It illustrates that not every breach of contract, even if proven, will justify rescission. The case also provides guidance on the test for establishing a tacit lex commissoria and the high threshold required to prove such an implied term.