Esso Petroleum Co. Ltd. v Mardon
[1966 E. No. 2571] [1976] Q.B. 801
Whether a pre-contractual statement made by an expert party could be
considered a contractual guarantee or a representation. Furthermore,
invoked the Doctrine of Negligent Misrepresentation and whether
Esso’s opinion could be taken as an opinion or a binding promise.
INTRODUCTION
In this comment, I argue that Esso v. Mardon centrally engages
with the doctrines of negligent misrepresentation and examines
how expert forecasts induce contractual reliance. The case is
presented briefly, followed by its doctrinal significance and a
critical analysis.
I.
FACTS
Esso Petroleum Co. Ltd. (hereby Esso) made a representation
to Mr. Mardon (hereby Mardon) regarding the potential annual
sales of a petrol station. This site was acquired on the basis that
the estimated annual consumption of petrol would be 200,000
gallons from the third year of operation. Mardon, relying on
this representation, entered into a tenancy agreement.
After the site had been acquired the local
planning authority required the forecourt and petrol pumps to
be placed at the back of the site which was accessible only
from the side street and not visible from the busy main road.
The predicted sales were, therefore, significantly
overestimated, resulting in financial losses for Mardon.
Mardon sued Esso for damages, alleging that Esso’s
representation was a warranty or, alternatively, a negligent
misrepresentation. Esso’s representation was based on an
initial forecast, which was not revised even after significant
changes in the station’s layout that impacted its visibility and
potential sales.
II.
ISSUES
1. Whether Esso Petroleum owed Mardon a duty of care in
making the representation of 200,000 Gallon throughput
and was negligent in discharge of said duty.
2. Whether the advice amounted to a collateral warranty, for
breach of which the defendant was entitled damages.
III. DECISION
The Court of Appeal found Esso liable for negligent
misrepresentation. Initially, the trial judge had ruled that the
statement was not a warranty but constituted negligent
misrepresentation.On appeal, the Court of Appeal upheld this
decision, stating that Esso had a duty of care to Mardon in
making the representation and breached this duty by failing to
provide an accurate forecast. The court awarded Mardon
damages for the losses he sustained due to relying on Esso’s
inaccurate sales forecast.
IV. COURT’S REASONING
The Court of Appeal’s decision was primarily based on the
principles of negligent misrepresentation, as established
in Hedley Byrne v. Heller 1
Esso, as a large corporation with expertise in the field, was
deemed to have a special relationship with Mardon, which
created a duty of care when making representations about the
petrol station’s potential (in this case, a throughput of 200,000
gallons of petrol)
The court found that Esso’s failure to update their
sales forecast despite knowing the changes in the station’s
layout constituted a breach of this duty.
The decision emphasised that representations made by a party
with expertise, intended to induce another party into a contract,
can lead to liability if the representation is inaccurate and the
other party relies on it to their detriment.
Lord Denning explained that if a person with special
knowledge makes a forecast, intending the other party to act
upon it, and they do act upon it, it can be seen as a warranty.
The court also considered the impact of reliance on
such representation in commercial decisions, highlighting the
importance of accuracy in pre-contractual statements made by
parties in a position of knowledge.
The
ruling
acknowledged
the
significant
consequences that such misrepresentations can have on
individuals who depend on these statements for business
decisions.
Lord Denning distinguished the case from Bisset v Wilkinson
[1927]2, stating that in Esso v Mardon, Esso had special
knowledge that Mr Mardon did not possess. The damages
1 Hedley Byrne & Co Ltd v Heller & Partners Ltd [1963] UKHL 4; Negligent Misrepresentation, McGill
Law Journal Vol 22 (1976)
2 Bisset v Wilkinson & Anor [1926] UKPC 1
awarded were for the loss suffered, not the loss of a bargain.
Lord Denning also argued that even without a warranty, there
would still be negligent misrepresentation liability in tort. He
rejected the notion that when a contract results, there is no tort
liability, emphasising the duty to negotiate with care when a
party with special knowledge makes a representation with the
intention of inducing another to enter a contract.
V.
DOCTRINAL SIGNIFICANCE
This case illustrates a number of principles. First, it was
established that statements made by a party as having special
knowledge or experience, even if they relate to future
predictions rather than to present facts, may be construed as an
implied warranty. Lord Denning explained that where a party
represents itself as an expert, the law assumes that its
statements are made with care and skill, and that those
statements are converted into contractual warranties rather
than mere opinions.
Second, the case develops the doctrine of negligent
misrepresentation by applying the Hedley-Byrne principle
to pre-contractual negotiations. It confirms that a party may be
liable in tort for negligent representations that induce another
party to enter into a contract, regardless of whether a formal
agreement is subsequently concluded.
Lastly, Esso v. Mardon affirms the coexistence of contractual
and extra-contractual remedies, marking a significant doctrinal
shift by allowing a plaintiff to obtain compensation for the
same conduct based on both breach of warranty and
negligence. This dual liability approach reinforces the
importance of trust in commercial transactions and expands the
protection afforded to parties who rely on expert opinions
when entering contractual relationships.
VI. REFLECTIONS AND ANALYSIS
The scope of the obligation of pre-contractual disclosure is
broadened by the recognition that expert testimony, even if it
is predictive, can be of great value to parties relying on
professional judgment. Lord Denning emphasized that “when
a person asserts a fact of his own knowledge and on which
another person intends to rely, he asserts with confidence that
he has reasonable grounds to believe it,”3 a significant
departure from the traditional view of predictions as mere
speculation. This view reflects the law’s strong interest in
protecting confidentiality when information asymmetry makes
one party vulnerable to the expert’s negligence.
The court’s articulation of negligent misrepresentation
reoriented the inquiry towards the assumption of
responsibility, requiring courts to examine whether the
representor presented themselves as possessing specialised
knowledge that induced reliance. The very nature of
commercial forecasting demands a duty of care where one
party is uniquely positioned to evaluate future prospects, as
shown by the shift from Bisset v Wilkinson, indicating that
the law now places considerable weight on the representor’s
expertise rather than the representational form. Esso’s failure
to revise its estimate after the planning authority’s intervention
shows that negligent omissions can be as actionable as positive
misstatements, enforcing a robust concept of commercial
obligations.
3 Esso Petroleum Company Ltd. v Mardon, [1976] EWCA Civ 4
The case also illustrates that tort and contract can coexist
without being mutually exclusive. Even where a collateral
guarantee could be established, the court accepted that the
claimant had a parallel action available for negligence,
ensuring that remedies did not depend solely on technical
categorisation. Lord Denning’s reasoning reflects a legitimate
concern for substantive justice, recognising that the claimant
had entered into the lease on the basis of guarantees that he had
no way of independently verifying. The protection of
reasonable expectations is essential to the integrity of modern
contracting, and Esso v Mardon illustrates this development by
highlighting realities of business decision-making.
Finally, the judgment highlights the tension between
contractual autonomy and the duty to exercise due-diligence
when providing expert information. While the parties retain
the freedom to negotiate, the case emphasizes that this freedom
does not extend to making improper predictions that
fundamentally affect the other party's commitment.
VII. INDIAN CONTEXT
n the Indian context, the principles in this case are fully aligned
with Section 18 of the Indian Contract Act 1872, which defines
misrepresentation as statements made innocently but without a
reasonable basis, except to give effect. Indian courts have
consistently interpreted commercial or factual assertions, even
when reasonably believed, as misrepresentation when made
without the degree of diligence expected of a party with
superior knowledge. Together with Section 19, which renders
such agreements void, the legal framework reflects the logic of
confidence protection adopted in the case of Esso v. Mardon.
The principle of negligent misrepresentation has also been
recognized in administrative and contractual disputes in India.
In Prabir Kumar Das v. State of Odisha and Ors.4, the
Odisha High Court ruled that a statement made by public
authorities without proper verification, and which induced
reliance on the applicant, amounted to misrepresentation,
invalidating the resulting administrative action. Similarly, in
Sk. Abdula Ahad and Ors. v. State of Odisha and Ors.5, the
Court emphasized that inaccurate or careless communications
that significantly influence the other party's decisions fall
within the scope of misrepresentation, especially when a party
is expected to act with greater diligence or have superior
information. These decisions underline that negligent or
careless statements, whether in commercial or administrative
settings, can undermine consent under Section 18 when they
induce prejudicial reliance.
Illustration: Applying Indian law to the Esso case, its fuel
production forecast would likely be considered a
misrepresentation under Section 18(a), as it was prepared by
an expert and served as the basis for the contract. The failure
to review the forecast after intervention by the planning
authority constitutes a negligent misrepresentation and renders
the contract voidable under Section 19. Given the emphasis on
due diligence, reliance on information, and information
imbalance in Indian jurisprudence, Mardon could enjoy
comparable protection under Indian law.
VIII. CONCLUSION
4 Prabir Kumar Das Vs. State of Odisha and Ors.: MANU/OR/0203/2012
5 Sk. Abdula Ahad and Ors. vs. State of Orissa and Ors. (17.09.2012 - ORIHC): MANU/OR/0595/2012
The Esso v. Mardon case is significant because it demonstrates
that expert forecasts can constitute a binding ancillary contract
and, if improperly provided, can result in negligent
misrepresentation. The key precedent is that a party possessing
expert knowledge must ensure the accuracy of any relevant
contractual statements, as reliance on such expert knowledge
is legally protected.