Predictika · Kenworth T680 truck quotes

An AI sales agent's truck quote, checked before it goes out

An AI sales agent drafts a quote for Kenworth T680 Class 8 tractors, with engine, transmission, axle ratio, cab, APU and warranty. Before the quote goes out, the agent sends it to Predictika, which checks it against a declarative model, compares the total and the cruise speed the agent states with the ones it computes, and returns every finding together with the line-item quote.

Scope: Kenworth T680 Class 8 tractor spec-and-quote for US buyers, in dollars. See everything this validator covers

This validator covers quotes for the Kenworth T680 Class 8 tractor with the PACCAR MX-11 and MX-13 and Cummins X15 engines, the PACCAR TX-12 and TX-18 and Eaton Endurant and Fuller transmissions, a choice of axle ratio, front axle, day or sleeper cab, APU and extended warranty. It does not cover other Kenworth models (T880, W990, T480 and others), trailers or bodies, or other PACCAR brands.

  • Powertrain fit — engine and transmission weight ratings against the gross combination weight, engine torque against the transmission limit, the minimum axle ratio above 100,000 lb, the front axle rating the engine needs, and the cruise engine speed worked out from axle ratio, top gear and cruise speed (it must land between 1,000 and 1,550 rpm).
  • Cab, state and options — a sleeper cab for long haul, the CARB Clean Idle label and no diesel APU on California-registered trucks, an APU only with a sleeper, and the 5-year extended warranty on PACCAR MX engines only.
  • Commercial terms — build slot lead time against the requested date, discount authority by order size, a heavy-haul review above 120,000 lb, federal excise tax with the government exemption, and the full price against the total the agent states.

Any quote for these Kenworth T680 engine, transmission, axle ratio, cab, APU and warranty combinations runs through this validator, not just the seven scenarios shown on this page. It is an illustrative model built from public information about the T680 and its drivetrain options; prices, ratings, lead times and discount limits are fictional, and it does not use PACCAR's internal rules.

The AI sales agentBuilds the truck quote from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

7 scenarios in 4 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQ (our assessment)Predictika
Cruise engine speed worked out from the axle ratio, the top gear of the chosen transmission and the cruise speed, then compared with the speed the agent statesOnly with workarounds
Each transmission needs its own top-gear value feeding a calculated field, and the quoted speed is rarely a field on the quote, so a wrong claim goes unchecked.		Cruise speed is computed from the three selections on every call and compared with the stated figure.
Powertrain fit: engine and transmission ratings against the weight, engine torque into the transmission, and a minimum axle ratio above 100,000 lbOnly with care
Each is a validation rule, but the ratings have to be kept in step across every engine and transmission pair as new options are added.		Ratings are data on the engine and transmission, and every check runs together on one model.
California sleeper rules: Clean Idle label required, no diesel APU, and the 5-year warranty only on PACCAR MX enginesOnly with care
Possible as separate rules, but they interact with the cab, APU and engine choice and have to be maintained in step.		State, cab, APU and engine are on one model, so every combination is checked at once.
A stated total that adds federal excise tax for a government buyer who is exemptOnly with care
A rule can compare a stated total with a calculated one, but only if the stated figure is a field on the quote, which it rarely is.		The stated total travels with the quote and is compared with the computed total, exemption included.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1Engine weight rating covers the gross combination weight.
2Transmission weight rating covers the gross combination weight.
3Engine torque is within the transmission input limit.
4Above 100,000 lb the axle ratio is at least 3.36.
5Cruise engine speed (axle ratio, top gear, cruise speed) is between 1,000 and 1,550 rpm.
6Front axle is rated for the engine.
7Long haul has a sleeper cab; an APU is offered with a sleeper only.
8California sleeper trucks carry the CARB Clean Idle label; no diesel APU in California.
95-year extended warranty on PACCAR MX engines only.
10Build slot lead time (engine plus transmission) within the requested date.
11Discount within the maximum for the order size (3 percent a sales rep may give alone, approval above).
12Heavy-haul review above 120,000 lb (approval).
13Federal excise tax of 12 percent, waived for government buyers.
14The agent's stated total matches the computed total.
15The agent's stated cruise speed matches the computed cruise engine speed.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Engine rating and cruise speed: Eight day-cab tractors at 100,000 lb

    
The agent's request. Please quote 8 Kenworth T680 day-cab tractors with the PACCAR MX-11 405 hp engine and the PACCAR TX-12 automated transmission for Prairie Line Carriers, with a 3.70 axle ratio, for regional work at a gross combination weight of 100,000 lb and a cruise speed of 65 mph (about 1,250 rpm), needed in 20 weeks with a 3 percent discount. The quote states a total of $1,407,974.40. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Weight above the engine rating. 100,000 lb gross combination weight is above the 80,000 lb rating of the PACCAR MX-11 405 hp 1450 lb-ft; choose a stronger engine.
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  • Cruise engine speed out of range. Cruise engine speed of 1,563 rpm at 65 mph is outside the 1,000 to 1,550 rpm band; change the axle ratio.
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  • Quoted cruise speed does not match. Stated cruise speed does not match: the agent stated 1,250 rpm; the validator computes 1,563 rpm.
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2. Engine rating and cruise speed: The agent resubmits after fixing the errors

    
The agent's request. Please quote 8 Kenworth T680 day-cab tractors with the PACCAR MX-13 510 hp engine and the PACCAR TX-12 automated transmission for Prairie Line Carriers, with a 3.08 axle ratio and a 13,200 lb front axle, for regional work at a gross combination weight of 100,000 lb and a cruise speed of 65 mph (about 1,301 rpm), needed in 20 weeks with a 3 percent discount. The quote states a total of $1,505,315.84. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Quote summary. Total $1,505,315.84: truck $977,760.00; powertrain $208,744.00; powertrain $143,560.00; chassis $13,968.00; tax $161,283.84.
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  • Cruise speed check. Cruise engine speed is 1,301 rpm, inside the 1,000 to 1,550 rpm band; the agent quoted 1,301 rpm.
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3. California sleepers: Six California long-haul sleepers

    
The agent's request. Please quote 6 Kenworth T680 52 inch mid-roof sleeper tractors with the Cummins X15 565 hp engine and the PACCAR TX-18 automated transmission, a diesel APU and the 5-year extended powertrain warranty for Redwood Valley Haulers, with a 3.08 axle ratio, a 13,200 lb front axle, for long-haul work, registered in California at a gross combination weight of 97,000 lb and a cruise speed of 62 mph (about 1,241 rpm), needed in 22 weeks with a 3 percent discount. The quote states a total of $1,374,464.64. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • California needs the Clean Idle label. A sleeper truck registered in California needs the CARB Clean Idle label.
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  • Diesel APU not allowed in California. A diesel APU is not allowed on a California-registered truck; use the electric APU.
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  • Extended warranty not offered on this engine. The 5-year extended powertrain warranty covers PACCAR MX engines only; Cummins X15 565 hp 2050 lb-ft selected.
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4. California sleepers: The agent resubmits after fixing the errors

    
The agent's request. Please quote 6 Kenworth T680 52 inch mid-roof sleeper tractors with the PACCAR MX-13 510 hp engine and the PACCAR TX-18 automated transmission, an electric APU, the CARB Clean Idle label and the 5-year extended powertrain warranty for Redwood Valley Haulers, with a 3.08 axle ratio, a 13,200 lb front axle, for long-haul work, registered in California at a gross combination weight of 97,000 lb and a cruise speed of 62 mph (about 1,241 rpm), needed in 22 weeks with a 3 percent discount. The quote states a total of $1,346,435.52. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Quote summary. Total $1,346,435.52: truck $733,320.00; powertrain $156,558.00; powertrain $130,950.00; cab $78,570.00; chassis $10,476.00; equipment $55,872.00; warranty $40,800.00; tax $139,889.52.
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  • Cruise speed check. Cruise engine speed is 1,241 rpm, inside the 1,000 to 1,550 rpm band; the agent quoted 1,241 rpm.
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5. Heavy haul, delivery and discount: Twelve heavy-haul tractors at 140,000 lb

    
The agent's request. Please quote 12 Kenworth T680 day-cab tractors with the Cummins X15 565 hp engine and the Eaton Fuller 18-speed manual transmission for Basin Aggregate Hauling, with a 3.70 axle ratio and a 14,600 lb front axle, for vocational work at a gross combination weight of 140,000 lb and a cruise speed of 64 mph (about 1,441 rpm), needed in 14 weeks with a 15 percent discount. The quote states a total of $2,016,336.00. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Cannot be delivered in time. Build slot lead time is about 19 weeks; the customer needs the trucks in 14 weeks.
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  • Discount above the maximum. Discount of 15 percent is above the 12 percent maximum for this order size.
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  • Heavy-haul review needed. 140,000 lb gross combination weight is above 120,000 lb and needs a heavy-haul review by application engineering.
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6. Heavy haul, delivery and discount: The agent resubmits after fixing the errors

    
The agent's request. Please quote 12 Kenworth T680 day-cab tractors with the Cummins X15 565 hp engine and the Eaton Fuller 18-speed manual transmission for Basin Aggregate Hauling, with a 3.70 axle ratio and a 14,600 lb front axle, for vocational work at a gross combination weight of 140,000 lb and a cruise speed of 64 mph (about 1,441 rpm), needed in 22 weeks with a 10 percent discount. The quote states a total of $2,134,944.00. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Heavy-haul review needed. 140,000 lb gross combination weight is above 120,000 lb and needs a heavy-haul review by application engineering.
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  • Discount needs approval. Discount of 10 percent is above the 3 percent a sales rep may give alone.
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  • Quote summary. Total $2,134,944.00: truck $1,360,800.00; powertrain $360,720.00; powertrain $142,560.00; chassis $42,120.00; tax $228,744.00.
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  • Cruise speed check. Cruise engine speed is 1,441 rpm, inside the 1,000 to 1,550 rpm band; the agent quoted 1,441 rpm.
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7. Stated total: Twenty tractors for a government fleet

    
The agent's request. Please quote 20 Kenworth T680 76 inch high-roof sleeper tractors with the PACCAR MX-13 455 hp engine and the PACCAR TX-12 automated transmission for the Tri-County Public Works fleet (a government buyer), with a 2.64 axle ratio, for long-haul work at a gross combination weight of 80,000 lb and a cruise speed of 65 mph (about 1,115 rpm), needed in 20 weeks with a 3 percent discount. The quote states a total of $4,065,308.80. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Quoted total does not match. Stated total does not match: the agent stated $4,065,308.80; the validator computes $3,629,740.00.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent drafts a quote for Kenworth T680 Class 8 tractors, with engine, transmission, axle ratio, cab, APU and warranty. Before the quote goes out, the agent sends it to Predictika, which checks it against a declarative model, compares the total and the cruise speed the agent states with the ones it computes, and returns every finding together with the line-item quote.
    2. 
      
  2. I will start with the first request by the agent.
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  3. The agent says. Please quote 8 Kenworth T680 day-cab tractors. The quote states a total of $1,407,974.40. The rest of the request is on screen.
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  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with three findings, all in one answer. 100,000 lb gross combination weight is above the 80,000 lb rating of the PACCAR MX-11 405 hp 1450 lb-ft; choose a stronger engine. Cruise engine speed of 1,563 rpm at 65 mph is outside the 1,000 to 1,550 rpm band; change the axle ratio. Stated cruise speed does not match: the agent stated 1,250 rpm; the validator computes 1,563 rpm.
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  6. The validator returned three blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
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  7. What this shows: for cruise engine speed worked out from the axle ratio, the top gear of the chosen transmission and the cruise speed, then compared with the speed the agent states, a rules-based CPQ (our assessment) can do this only with workarounds.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the engine to PACCAR MX-13 510 hp, the axle ratio to 3.08, the front axle to 13,200 lb, the quoted cruise speed to 1,301 rpm and the quoted total to $1,505,315.84.
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  10. It calls the validator again.
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  11. This time the validator clears it.
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  12. The validator also returns the line-item quote. It starts with Day cab and Federal excise tax; the other four lines are on screen.
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  13. All three earlier findings are cleared, and the validator's total, $1,505,315.84, matches the quote.
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  14. Three problems caught in one call, fixed in one pass, and a clean $1,505,315.84 quote. That is the value of Predictika's validator: catching mistakes before they reach the customer. Now you can try the other scenarios yourself.
    15.