Opinion by
This is an appeal by Ford Motor Company, appellant, from a judgment entered upon a verdict for appellees Frank H. and Anne MacDougall. Appellant contends the court below erred in denying a motion for judgment n.o.v.
On April 17, 1962, a 1962 Comet station wagon owned and driven by appellees was involved in an accident on the Pennsylvania Turnpike. Appellees brought a trespass action against appellant, the manufacturer, and Thompson Lincoln Mercury Company, the retail seller, to recover property damage.
At trial, appellees presented only the deposition of Mrs. MaeDougall and testimony of Herbert Summers, an expert witness. From wife-appellee’s deposition, a jury could find the following facts: The car was purchased on March 19, 1962, and prior to April 17 had been driven only 143 miles, never at speeds in excess of 30 m.p.h. On April 17 appellees set out on a trip in *386 it to Rhode Island via the Turnpike. Mrs. MacDougall took over the driving after traveling about 35 miles on the Turnpike and attempted to travel at 60 m.p.h. At this speed she was unable to control the car. As she described it: “A. ... I started out and gradually got up to 60, but the car was handling so badly that I dropped back to 50. Q. When you say it handled badly at 60, what do you mean by that? A. I thought the wheel simply did not respond the way I expected it to. I had difficulty in keeping it going on an even course.”
She reaffirmed this erratic behavior on cross-examination : “Q. What was the difficulty when you got up to 60 miles an hour? A. Well, even at 50 miles an hour it was handling badly and it seemed to handle better at 50 than 60. It was difficult to keep it on a straight line going on the road. It was necessary continually to manipulate the wheel, and it did not even respond nicely. Q. Did the steering seem loose? A. Sometimes it did; sometimes it seemed to stick.”
The accident occurred after Mrs. MacDougall had driven 50 miles. While approaching a slight right-hand curve, she pulled into the left lane to pass. As the Comet pulled out, the steering difficulty became more severe. She could not control the steering wheel and the car went from the left lane onto the medial strip. On the first attempt to regain the roadway, the steering failed to respond. On the second attempt, the car oversteered, swerving across both eastbound traffic lanes. Mrs. MacDougall was unable to correct the oversteering and consequently the car rolled over on the berm.
Appellees’ expert, Mr. Summers, examined the steering assembly to determine the source of the steering malfunction and found three specific mechanical defects. Metal flakes were present in the gear box; the bearing on the steering shaft was “tight”; and the “high point” on the sector shaft was adjusted too tight *387 ly. In Summer’s opinion, the metal flakes, if lodged in the gear mechanism, could cause temporary steering tightness, as could the tight bearing on the steering shaft.
The function of the “high point” on the sector shaft is to stabilize steering during straight forward driving. Summers indicated that the improper adjustment to the “high point” would cause the car to oversteer when the wheel was turned and would require the driver to make constant steering corrections to maintain a straight forward course. While not giving an opinion as to whether the metal flakes or tight bearings prompted the accident, Summers suggested that the adjustment to the sector shaft was “very likely” to cause the accident.
Appellant argues that appellees have failed to meet their burden of proof of causation as Summers did not state unequivocally that the specific defects in the steering assembly were the cause of the accident.
Appellant’s liability is governed by Restatement of Torts, 'Second, §402A, which provides: “One who sells any product in a defective condition unreasonably dangerous to the user ... is subject to liability for physical harm thereby caused to the ultimate user. . . .” Mrs. MacDougall’s testimony permits a jury finding that a malfunction of the steering mechanism caused the accident. As the causal connection between the accident and the malfunction is established, appellant’s contention fails if a mechanical malfunction evidences a “defective condition” within the meaning of §402A.
Unless able to rely on the doctrine of res ipsa loquitur or exclusive control, a plaintiff asserting liability on grounds of negligence must connect injury with a specific defect in the manufacture or design of a product.
Loch v. Confair,
However, in
Greco v. Bucciconi Engineering Co.,
Three landmark Pennsylvania decisions on products liability clearly affirm
Greco’s
finding that the elements of breach of warranty and §402A are identical. In
Miller v. Preitz,
The relationship of warranty and strict tort liability was forcefully reemphasized in
Kassab v. Central Soya,
*389
“ [W]ith Pennsylvania’s adoption of Restatement 402a, the same demands of legal symmetry which once supported privity now destroy it. . . .[I]n the present case, for example, appellants’ complaint alleging that their property . . . was damaged ... by virtue of the physical harm caused when these animals ate appelleeSoya’s defective feed would have been sufficient to state a valid cause of action had it been captioned ‘Complaint in Trespass.’ However, because appellants elected to style their complaint as one in assumpsit for breach of warranty under the code, the requirement of privity would prevent these identical allegations from making out a good cause of action. This dichotomy of result is precisely the same evil which, prior to the Restatement, prevented the abolition of privity. It now compels this abolition.”
Proof of the specific defect in construction or design causing a mechanical malfunction is not an essential element in establishing breach of warranty. “When machinery ‘malfunctions’, it obviously lacks fitness regardless of the cause of the malfunction. Under the theory of warranty, the ‘sin’ is the lack of fitness as evidenced by the malfunction itself rather than some specific dereliction by the manufacturer in constructing or designing the machinery.”
Greco v. Bucciconi Engineering Co., supra,
at 982.
Cf., Frantz Equipment Co. v. The Leo Butler Co.,
Although plaintiffs in warranty actions have ordinarily sought to establish the cause of a malfunction, liability has been sustained in the absence of proof of a specific defect. In
Frigidinners, Inc. v. Branchtown Gun Club,
*390
This issue was specifically considered in
Jarnot v. Ford Motor Co.,
Bialek v. Pittsburgh Brewing Co.,
This evidentiary standard is fully in accord with that applied in other jurisdictions.
Henningsen v. Bloomfield Motors, Inc.,
The evidentiary requirements of negligence law demand proof that injury is proximately caused by a specific defect in design or construction because liability hinges upon whether the accident could have been avoided by the exercise of reasonable care. In contrast, the concern of both §402A and warranty law is with the fitness of the product, not the conduct of the producer as measured by due care. While proof of a mechanical malfunction does not support an inference of the absence of due care in the construction or design of equipment, it is circumstantial evidence of the unfitness of the equipment. Accordingly, we hold that the occurrence of a malfunction of machinery in the absence of abnormal use and reasonable secondary causes is evidence of a “defective condition” within the meaning of §402A, as it is evidence of lack of fitness for warranty liability.
In the instant case, Mrs. MacDougall’s testimony of the bizarre steering action both before and when the accident occurred establishes a mechanical malfunction in the absence of abnormal use which prevented her from maintaining control of the car. We find that the most reasonable inference to be drawn from this proof is that a defective condition in the Comet proximately caused the accident. Hence, the issue of causation was properly left to the jury.
Smith v. Bell Telephone Co.,
As appellant does not contend that appellees failed to prove any of the other elements of §402A liability, the court below properly refused the motion for judgment n.o.v.
The judgment of the court below is affirmed.
