Man Truck & Bus (SA) (Pty) Limited v Dorbyl Limited t/a Dorbyl Transport Products and Busaf

Africa Truck & Bus (Pty) Limited ('ATB'), whose rights devolved upon the appellant, entered into three interconnected agreements: (1) a lease agreement with Dusbus Leasing Co CC ('Dusbus') to lease 12 buses for 60 months for over R11 million; (2) a maintenance agreement with Dusbus to maintain the buses for an agreed fee; and (3) a 'risk-sharing agreement' with the respondent (which had supplied the bus bodies purchased by ATB for over R3 million). Under the risk-sharing agreement, clause 4 provided that ATB would maintain the buses under the maintenance agreement and allow the respondent to inspect them. Clause 5 required the respondent to pay a 'guaranteed amount' if the buses were repossessed due to Dusbus's default. Dusbus defaulted by failing to pay instalments, the buses were repossessed, and the appellant (as successor to ATB) sued the respondent for the guaranteed amount of over R1.4 million. The respondent raised the exceptio non adimpleti contractus, alleging ATB had failed to maintain the buses as required by clause 4.

• Whether ATB undertook an obligation to the respondent (as opposed to only to Dusbus) to maintain the buses under clause 4 of the risk-sharing agreement
• Whether the obligations under clauses 4 and 5 of the risk-sharing agreement were reciprocal such that the exceptio non adimpleti contractus could be raised
• Whether a decision to refer motion proceedings to evidence is appealable

The appeal was dismissed with costs, including costs of two counsel. The matter was referred back for determination of factual disputes regarding whether ATB had properly maintained the buses.

In bilateral contracts, obligations are prima facie reciprocal unless a contrary intention appears from the terms of the contract read with relevant background circumstances. Whether obligations are reciprocal depends on the parties' intention as determined through contractual interpretation - specifically, whether one obligation was undertaken in exchange for performance of the other. In interpreting reciprocity, courts consider: (1) the language used in creating the obligations; (2) the commercial context and purpose of the agreement; (3) whether the obligations are so closely connected that one is intended as the exchange for the other. A direction by a court to refer motion proceedings to oral evidence is not a 'judgment or order' within s 20(1) of the Supreme Court Act 59 of 1959 and is therefore not appealable, as it is not final in effect, not definitive of parties' rights, and does not dispose of substantial relief.

Cloete JA observed that limitations on a third party's (Dusbus's) rights in its contracts with one party (ATB) do not automatically limit the other contracting party's (respondent's) rights in a separate contract with that party - such limitations are res inter alios acta. The court noted that practical difficulties in ascertaining whether maintenance obligations are current do not, without more, preclude a finding of reciprocity - this would otherwise undermine reciprocity in standard maintenance contracts. Lewis JA (dissenting) observed that the materiality of an obligation does not render it per se reciprocal, and that the motive for including a term cannot affect its meaning or the ordinary consequences of the contract. She noted the respondent would not be without remedy if there was breach, as it could claim damages under clause 10 of the agreement.

This case provides important guidance on determining when contractual obligations are reciprocal for purposes of the exceptio non adimpleti contractus. It affirms that bilateral contracts create a prima facie presumption of reciprocity but emphasizes that the ultimate question is one of contractual interpretation based on the parties' intention. The judgment demonstrates how commercial context and the structure of obligations inform the determination of reciprocity. It also clarifies that interlocutory orders referring matters to evidence are not appealable as 'judgments or orders' under the Supreme Court Act. The case illustrates judicial disagreement on applying reciprocity principles to complex commercial arrangements involving multiple interconnected contracts.