Plaintiffs instituted this products liability action to recover damages for defendant’s alleged breach of an implied warranty of fitness with respect to plaintiffs’ 1967 Chevrolet Belair passenger vehicle. Plaintiffs contended that defendant manufactured said vehicle with defective motor mounts and that these defective motor mounts caused a single car accident in which plaintiff Clem Cassette’s vehicle was demolished and plaintiff Nancy Cassette suffered personal injuries. On September 24, 1975, a Keweenaw County Circuit Court jury returned a verdict in favor of plaintiffs, awarding plaintiff Clem Cassette $800 in damages for the loss of his vehicle, and plaintiff Nancy Cassette $5,000 in damages as compensation for her personal injuries. On December 11, 1975, the trial court denied defendant’s motion for a judgment notwithstanding the verdict and/or a new trial. Defendant appeals as of right, raising a single issue for our consideration.
Defendant contends that plaintiffs failed to support their breach of implied warranty claim with evidence sufficient to support the verdict. Thus, *227defendant reasons, the trial court erred in failing to grant defendant’s motion for a judgment notwithstanding the verdict. We agree.
The automobile which is the subject matter of this case was purchased by plaintiff, Clem Cassette, in May of 1971. At the time of purchase, the odometer indicated that there were 48,024 miles on the vehicle.
Plaintiff, Nancy Cassette, daughter of Clem Cassette, testified that on September 10, 1971, she was driving said automobile when she lost control of the steering as the vehicle veered to the left, crossed the center line and then stopped upon hitting a rock. At the time of the accident, the odometer registered 56,663 miles.
Defendant did admit that the motor mounts on certain Chevrolet vehicles could separate into two or more pieces which upon rapid acceleration could allow the engine to rotate thus affecting the engine’s throttle.1 Nancy Cassette, according to her own testimony and that of the sheriff following behind her just prior to the accident, maintained a constant speed. The road upon which she was traveling is relatively flat with no steep inclines. Plaintiffs’ expert and defendant’s expert both stated that in order for the engine to rotate there would have to be a rapid increase in acceleration from a stop or slow start.
In order to establish a prima facie case plaintiffs had to prove a defect attributable to defendant and that the defect was a cause of the accident. Kupkowski v Avis Ford, Inc, 395 Mich 155, 161; *228235 NW2d 324 (1975), Caldwell v Fox, 394 Mich 401; 231 NW2d 46 (1975), Piercefield v Remington Arms Co, 375 Mich 85; 133 NW2d 129 (1965).
We recognize and respect the principle that appellate courts of this state refuse to interfere with jury verdicts where sufficient although weak evidence has been presented. Tuttle v Department of State Highways, 397 Mich 44, 46-47, n 3; 243 NW2d 244 (1976), Kupkowski v Avis, supra. However, where the proofs are devoid of facts which may establish a reasonable inference as to one of the necessary elements in a given cause of action then it becomes our duty to vacate the jury’s verdict. Kupkowski v Avis, supra.
Plaintiffs did satisfy the first element of a products liability action. The recall letter, defendant’s pretrial admission, and the undisputed fact that the motor mounts were found broken after the accident establish a possible defect. However, plaintiffs failed to present any proof that would allow a jury to reasonably infer that the alleged defect caused the accident. In fact, plaintiffs’ own proofs established that broken motor mounts could interfere with the steering mechanism only upon rapid acceleration, and there was no evidence of rapid acceleration in this case. Defendant theorized that the impact of the accident caused the motor mounts to separate. Plaintiffs presented no proof as to other possible defects relating to the steering mechanism, and in fact did not even investigate the steering after the accident.
Proof of a possible defect and an injury is insufficient to form a case submittable to a jury. Holloway v General Motors Corp, 60 Mich App 208, 215; 230 NW2d 380 (1975), lv granted, 394 Mich 824 (1975). Plaintiffs presented no theory which would allow a reasonable inference that broken motor *229mounts caused the accident in this case. In consideration of the mileage on the car and all of the evidence presented, a determination that this alleged defect caused plaintiffs’ injuries would be merely conjecture. See Pippen v Denison Division of Abex Corp, 66 Mich App 664; 239 NW2d 704 (1976), Meli v General Motors Corp, 37 Mich App 514; 195 NW2d 85 (1972).
Plaintiffs did not present evidence sufficient to form a reasonable inference that defendant’s product was a cause of this accident. The denial of defendant’s motion for judgment notwithstanding the verdict is therefore reversed and this case is remanded to the trial court for the issuance of an order consistent with this opinion. Costs to appellant. .
W. P. Hampton, J., concurred.Subsequent to the automobile accident, plaintiff, Clem Cassette, received a letter from defendant explaining a possible defect in the motor parts of this automobile, and under what conditions the engine would rotate. This letter was admitted into evidence at trial. Additionally, defendant in a pretrial admission stipulated to the possible defect.