Dan Dickerson brought a small claims action against Mountain View Equipment Company for the cost of repairing a used tractor previously purchased from the company. The magistrate in the small claims department entered judgment for Dickerson and Mountain View appealed to the district court. After a de novo trial, the district court found that Mountain View had breached two warranties: an implied warranty of merchantability and аn implied warranty of fitness for a particular purpose, I.C. §§ 28-2-314, -315. The district court awarded judgment to Dickerson and denied a motion by Mountain View for a new trial. On appeal to this Court, Mountain View argues that no implied warranties existed; that there was insufficient evidence to establish breach of the implied warranties; and an expressed warranty tween the parties superceded any implied warranty of merchantability. For the reasons stated below, we affirm the judgment of the district court.
The events which led to this action are undisputed. In the spring of 1982, Dickerson advised Mountain View that he needed to purchase a tractor for the spring planting season which was from April 1 to May *713 15. He was shown two tractors with their engines, transmissions, and axles completely disassembled in the company’s shop. The company assured Dickerson the tractors would be totally rebuilt. Dickerson paid $13,850 for one of the rebuilt tractors. He received a trade-in credit of $6,725 on his old tractor and paid the balance of $7,125. When he purchased the tractor, Dickerson received a “Used Equipment Warranty.” This warranty indicated the tractor was sold under a “Mountain View Warranty.” The Mountain View Warranty stated:
Machinery sold in this category will include a warranty of operation, service work and parts performance ... fоr 30 days from use date and all repairs will be based 50-50 (customer to pay 50% of repair bill and Mountain View Equipment to pay 50% of repair bill). If the machine has a completely rebuilt engine or gearbox, the warranty will be 100% on these specified components for 90 days from use date.
Dickerson and the company agreed to modify the warranty. The modified warranty provided: “Transmission & Differential to have a 90 day full warranty. MVE to put a 100% full warrаnty for 30 days from date of delivery on major problems.”
Mountain View delivered the tractor to Dickerson’s farm on May 7, 1982. After Dickerson started the tractor and drove less than 200 feet, the tractor “jumped out of gear.” Dickerson called the company and Mountain View returned the tractor to the shop on the same day. The company loaned Dickerson another tractor but he testified it was too small to pull any of his heаvy planting equipment. He borrowed and rented tractors during the week his tractor was being repaired. Using the borrowed and rented tractors, Dickerson completed his spring planting. After Mountain View had repaired a gear in the transmission, the tractor was returned to Dickerson. Dickerson fueled the tractor and attached a piece of field equipment, but the tractor’s hydraulic power director would not function. Mountain View attempted to fix the tractor in the field but eventually had to take it back to the shop. The tractor was again repaired and returned to Dickerson. He operated the tractor for approximately ten hours following the spring season. After the tractor had been repaired the second time, Dickerson noted several problems in the tractor’s steering, throttle, right brake, and door. The engine was also leaking oil. While still within the warranty period, Mountain View and Dickerson agreed that the company would complete the necessary repairs after the fall harvesting season. Dickerson used the tractor for approximately 190 hours in the fall. He used the tractor in fifth and sixth gear (light load situations) to pull a light twelve-foot disc. The agreed warranty work was accomplished in January of 1983.
Dickerson next used the tractor during spring planting in late April 1983. The spring work was the most demanding on the tractor. Dickerson used the tractor’s third and fourth gears (heavy load situations) to pull a twenty-four foot cultivator. He made two passes pulling the cultivator, and the tractor broke down. Again, Mountain View picked up the tractor and discovered that two teeth were sheared off from the third gear wheel. Although the previous repairs had been done by Mountain View under warranty, this time the company сharged Dickerson $1,732.29 before releasing the tractor. He paid the charge and then instituted the small claims action to recover this amount.
The district court found Mountain View’s “Used Equipment Warranty” was an express warranty which attempted to disclaim any implied warranties. The court determined the disclaimer was ineffective. 1 The court held the tractor was not merchantable; thus, Mountain View had breached an implied warranty of mеrchantability, I.C. § 28-2-314. The district court *714 found that the gear was “more prQbably than not” defective at the time of sale and the string of breakdowns amply supported the finding that the company had breached its implied warranty of merchantability. 2
In a warranty cause of action, the burden is on the plaintiff to show the existence of a particular warranty, that the warranty was breached, and that damage was proximately caused by the alleged breach.
See Verbillis v. Dependable Appliance Co.,
I
Idaho Code section 28-2-314 provides that, unless excluded or modified, a warranty of merchantability is implied in a sale of goods if the seller is a merchant in that kind of goods.
Duff,
Mountain View suggests that an implied warranty of merchantability was limited or nonexistent because the tractor was a used piece of equipment. Although at least one jurisdiction does not extend the implied warranty of merchantability to used goods,
Southerland v. Northeast Datsun, Inc.,
One distinction between new and used goods goes to the standard of merchantability applied to such goods. Generally, goods are merchantable when, at the least, they are fit for the ordinary purposes for which they are used. I.C. § 28-2-314. “Merchantability is a flexible concept based on the circumstances of the sale and dependent on the description of the goods.”
Perry,
Mountain View also asserts that the еxpress warranty embodied in its Used Equipment Warranty supercedes any implied warranty of merchantability. The company agrees with the district court’s finding that the ninety-day coverage of the used equipment warranty had expired when the tractor broke down in the spring of 1983. Accordingly, the company argues that the breakdown which constituted the alleged breach of the implied warranty occurred past the expiration of the ninety-dаy period. Mountain View directs our attention to I.C. § 28-2-317 which discusses the cumulative effect of multiple warranties. “Warranties whether express or implied shall be construed as consistent with each other and as cumulative, but if such construction is unreasonable the intention of the parties shall determine which warranty is dominate____ Express warranties displace inconsistent implied warranties.” I.C. § 28-2-317(c). Mountain View insists that the express warranty coverage for ninety days supercedes the implied warranty of merchantability and, consequently, any breakdown of the tractor past the ninety-day period under an implied warranty of merchantability is inconsistent and must fail. Mountain View argues that extending its obligation to repair the tractor beyond the ninety-day warranty period would be unreasonable and, thus, the express and cumulative warranties are in conflict.
Compare, e.g., Mountаin Fuel Supply Co. v. Central Engineering & Equipment Co.,
We believe Mountain View misconstrues the cumulative effect of an implied warranty of merchantability and the express warranty. The implied warranty of merchantability relates to the condition of goods at the time of the delivery and does not extend into the future. “A breach of warranty occurs when tender of delivery
*716
is made, except that where a warranty
explicitly
extends to future performance of the goods and discovery of the breach must await the time of such performance.” I.C. § 28-2-725(2). For warranty coverage to extend to future performance, the warranty must be expressed.
Wright v. Cutler-Hammer, Inc.,
For two reasons we believe that courts should exercise some restraint in ruling that multiple warranties are inconsistent. First, [28 — ]2—316 provides several devices for disclaiming warranties, and the comments to that section indicate a pоlicy of preserving implied warranties unless the seller complies with the prescribed formal requirements. Second, in nearly all cases the seller drafts the sales agreement including the expressed warranty clause; in those cases it seems reasonable to place the burden of multiple warranties on the seller, since he had the opportunity to resolve any possible inconsistencies.
J. WHITE & R. SUMMERS, HANDBOOK OF THE LAW UNDER THE UNIFORM COMMERCIAL CODE § 12-7 (2d ed. 1980) (hereinafter cited as WHITE & SUMMERS). We must now examine the standard of merchantability in this case and whether Mountain View breached this standard.
II
In an action for breach of an implied warranty, the buyer has the burden of establishing the breach by a preponderance of the evidence.
See Martineau v. Walker,
A
What standard of merchantability should be applied to the sale of this used tractor? Again, we resort to the description contained in the contract and those additional factors which may reveal the intent of the parties concerning any implied warranty of merchantability. Turning first to the contract, we note the sales contract between Dickerson and Mountain View identified the tractor as being used. Although used, the tractor was to be totally rebuilt before delivery to Dickerson. As previously indicated, Dickerson advised Mountain View that he needed a tractor for spring planting. Once the tractor was selected, Dickerson and the company agreed to an extension of the warranty period to cover the spring planting season. The company presented evidence that its nor *717 mal policy in selling used equipment was to only provide a thirty-day warranty. The Used Equipment Warranty also provided that if “the machine has a completely rebuilt engine or gearbox, the warranty will be 100% on these specified components for 90 days from use date.” (Emphasis added). Under the wording of this condition it is assumed that only a completely rebuilt gearbox would be provided with such a warranty. Mountain View’s general manager testifiеd: .
We would want a customer to have a tractor that would do the job for him. And the purpose of having it in the shop and having the transmission torn apart was to repair what was ever needed to be done to the tractor to the best of our ability.
[Question by Dickerson:] The fact that the transmission was completely out of the tractor at the time I bought it would indicate that you knew there were transmission problems; is that correct?
[Answer:] At the time it was out in our shop and the transmission was torn apart, yes, there were problems. And we did replace whatever gear was necessary to make the tractor work or perform properly.
[Question:] You replaced what was necessary to make it perform properly?
[Answer:] Our standard practice is to look at the entire situation and replace whatever needs to be replaced to make the trаctor function properly.
We now turn to the other factors to be considered in determining the appropriate standard of merchantability for the used tractor. The company presented evidence that a new tractor would cost approximately $40,000 in comparison to Dickerson’s tractor purchased for $13,850. It is significant to note that, although Dickerson paid only 35% of a new tractor’s cost, his tractor was tо receive the full ninety-day warranty because of the rebuilt gearbox. Dickerson further testified that he agreed to the ninety-day warranty under the assumption that it would cover his initial use of the tractor during spring planting. He testified that “if the tractor held up during the spring work, I’d be more than satisfied with the mechanical condition of the unit.” The warranty period would have covered the tractor during its period of heaviest use. Because the traсtor did not operate properly upon its initial delivery, Dickerson was denied the opportunity to test the tractor that first spring. Finally, the company’s Used Equipment Warranty also contained two other warranty categories. The first indicated that the used equipment was sold “as is.” The second category only guaranteed the used equipment the first time it was started in the field. Dickerson obviously received the most extensive used equipmеnt warranty offered by the company. Since Dickerson received a full ninety-day warranty, it is reasonable to assume the tractor would meet a higher standard of merchantability than one sold under a thirty-day warranty.
B
Mountain View finally asserts that the evidence was not sufficient to find a breach of implied warranty of merchantability. The company advances several reasons for this position. First, it contends that Dickerson failed to show he did not misuse the tractor. As our Supreme Court indicated in
Chisholm v. J.R. Simplot Co.,
“A breach of warranty may not be found where the buyer’s misuse of the product causes it to malfunction.”
Secondly, and more importantly, Mountain View maintains that Dickerson failed *718 to prove that the tractor was unmerchantable at the time of delivery. The company presented evidence that the gear could have been broken by “dumping the clutch” which would have subjected the transmission to a heavy torque load. The company also presented testimony that the gear in question was pitted and had wear marks on the leading edges of the gear teeth. The shop foreman testified that pitting and wear marks appear on a gear over time depending on the amount of stress placed on the gear. The foreman opined that the pitting on this particular gear may have occurred after the gear had been in service for approximately 1,000 to 5,000 hours. Dickerson testified unrebutted that he had only used the tractor for a total of 200 hours, of which 190 hours were used pulling light implements in the tractor’s fifth and sixth gear. Dickerson did not have an opportunity to test the tractor the first spring, and the 190 hours of fall work were not equivalent to the heavy work normally occurring with spring planting. Although the shop foreman testified that the pitting would not directly result in the shearing of the teeth, he did indicate that it was the company's normal custom to replace a pitted gear. Dickerson asserted that the gear in question should have been replaced when the tractor was originally reassembled prior to delivery. He maintains that the pitting and wear marks on the gear indicates the gear’s unmerchantability and should have been replaced.
Althоugh the company presented testimony that the teeth of the gear were not sheared when the tractor was rebuilt, the question still remains whether the pitted and worn condition of the gear supported the court’s finding that the tractor was unmerchantable. Facts may be proved by circumstantial, as well as by positive or direct evidence.
American Fertilizer,
We find that the record supports the district court’s finding of a breach of an implied warranty of merchantability. Accordingly, we affirm the judgment of the district court. Costs to Dickerson. No attorney fees on appeal.
Notes
. The district court found that the disclaimer did not mention "merchantability” and was not conspicious on the Used Equipment Warranty. See I.C. § 28-2-316(2). This issue has not been appealed so we will not address it.
. Because we find the breach of an implied warranty of merchantability to be dispositive, it is unnecessary to discuss the district court’s alternative finding of an implied warranty of fitness for a particular purpose, I.C. § 28-2-315.
