Rental Days on Collision Claims: How Canadian Shops Cut LOR Without Cutting Corners
A practitioner's guide to managing Length of Rental on MPI, SGI, and private-carrier claims while protecting repair quality, supplement discipline, and OEM compliance.
Author
Published
Length
14 min read
Abstract
Length of Rental (LOR) on Canadian collision claims has tightened over the past two years as parts availability has stabilized and shops have gotten more disciplined about write-up completeness. But LOR is the wrong number to chase directly. The right number is keys-to-keys days controlled by the shop, with rental days as a downstream output. This article breaks down how MPI, SGI, and private-carrier programs actually score rental performance, where shops lose days they did not need to lose, and how documentation-first estimating compresses LOR without forcing a shop to skip operations or short OEM procedures.
Key findings
- 1Canadian average rental length on repairable claims has dropped roughly one day year-over-year as post-COVID parts constraints eased, per Enterprise's Average Rental Length report.
- 2Total loss frequency in Canada rose in 2023, which mechanically pulls reported LOR down on repairable-only segments and masks underlying repair-cycle performance.
- 3On MPI Light Vehicle Accreditation Agreement (LVAA) shops, the largest controllable LOR drivers are write-up completeness at teardown, supplement timing, and parts-order discipline - not raw labour throughput.
- 4Shops that move parts ordering and OEM procedure pulls to the write-up stage typically reduce keys-to-keys days by 1.5 to 2.5 days on moderate-severity claims.
- 5Rental days are an insurer cost line, not a repair-quality metric - cutting LOR by skipping calibrations, sublet operations, or pre/post scans transfers risk to the carrier and the customer.
Body
1. What Length of Rental actually measures on a Canadian collision claim
Length of Rental (LOR) is the number of billable rental days an insurer pays from the moment a claimant takes possession of a rental vehicle to the moment the vehicle is returned, typically when the customer picks up the repaired car. On Canadian collision claims, LOR is reported and benchmarked primarily by Enterprise's Average Rental Length (ARL) report, which carriers including MPI, SGI, Intact, Aviva, Wawanesa, Co-operators, and Definity use as one of several cycle-time signals.
LOR is not the same as keys-to-keys days. Keys-to-keys is the shop-controlled window from drop-off to delivery. LOR includes pre-drop-off lag (the gap between FNOL and the day the vehicle enters the shop) and any pickup delay after the vehicle is repair-complete. A shop can hit its keys-to-keys target and still get charged a high LOR if the customer's rental started at FNOL and the car sat for four days waiting for a teardown bay.
2. Why Canadian LOR has been falling - and why the number is partly misleading
Canadian average rental length on repairable claims has been declining since the post-COVID parts-supply peak of 2022-2023. Enterprise's Canadian ARL data and Canadian Underwriter reporting show the gradual easing of parts backorders, the normalization of OEM and aftermarket supply chains, and improved shop scheduling discipline as the main contributors. Shops are taking close to one full day less to return a vehicle than they were two years ago on comparable severity.
The number is partly misleading for two reasons. First, total loss frequency in Canada rose in 2023, which removes the most severe (and longest-rental) claims from the repairable pool and pulls the average down without any operational improvement. Second, the underlying mix of work has shifted toward newer vehicles with ADAS content, which adds calibration sublet time but still often nets out shorter overall because parts arrive faster than they did during the chip shortage.
| Factor | Effect on reported LOR | Operationally real? |
|---|---|---|
| Parts availability normalizing | Down | Yes - real cycle-time gain |
| Higher total loss frequency | Down | No - mix-shift artifact |
| More ADAS calibrations per claim | Up | Yes - adds sublet days |
| Tighter write-up discipline at LVAA shops | Down | Yes - real cycle-time gain |
| Technician shortage in some regions | Up | Yes - throughput constraint |
| Newer-vehicle mix (more OEM parts) | Mixed | Depends on parts channel |
3. How MPI, SGI, and private carriers score rental performance
Carriers do not score LOR in isolation. They score it against severity, against the program's published cycle-time expectation, and against the shop's supplement frequency and customer satisfaction index (CSI). A shop with low LOR and a high supplement rate is flagged as cutting estimates short to start the rental clock; a shop with low LOR and poor CSI is flagged as rushing customers off the lot.
On the MPI Light Vehicle Accreditation Agreement, rental-relevant signals appear inside the broader cycle-time and supplement-discipline metrics that feed accreditation reviews. SGI's accredited-shop program operates similarly, with cycle-time and customer-experience metrics weighted alongside cost-per-claim. Private DRPs (Intact, Aviva, Wawanesa, Co-operators, Definity) typically build LOR into a scorecard that also includes parts mix, alternative-parts use, and re-inspection rates.
| Metric | MPI LVAA | SGI Accredited | Private DRP (typical) |
|---|---|---|---|
| Keys-to-keys days | Tracked | Tracked | Tracked |
| LOR (Enterprise ARL) | Referenced | Referenced | Scored |
| Supplement frequency | Scored | Scored | Scored |
| Re-inspection / comeback rate | Scored | Scored | Scored |
| CSI / customer survey | Scored | Scored | Scored |
| Alternative parts use / RPS | Scored (RPS) | Scored | Scored |
4. The four controllable LOR drivers inside the shop
Four shop-side decisions account for the vast majority of avoidable rental days on Canadian claims: write-up completeness at teardown, parts-order timing, supplement discipline, and pre-delivery quality control. Throughput (techs and bays) matters, but on most moderate-severity claims it is not the binding constraint - documentation timing is.
- 1Write-up completeness at teardown. Every line item that is determinable at write-up but added later becomes a supplement, and every supplement adds approval lag and parts-order delay. Pre/post scan, calibration triggers, one-time-use fasteners, corrosion protection, and structural sectioning operations should appear on the initial estimate, not the third supplement.
- 2Parts-order timing. Ordering parts off the initial complete estimate rather than waiting for first-supplement approval typically saves 1 to 3 calendar days on claims with no exotic parts. The risk is ordering parts that get changed - which is why write-up completeness must come first.
- 3Supplement discipline. The fewer round-trips between shop and carrier, the shorter the cycle. Shops that batch supplement items and submit once (with full OEM procedure documentation attached) get faster approval than shops that drip-feed line items.
- 4Pre-delivery QC and calibration scheduling. A vehicle that fails pre-delivery scan or has an uncompleted calibration sublet sitting on it on day-of-delivery adds 1 to 4 LOR days. Calibration appointments should be booked the day the part is ordered, not the day the part is installed.
5. Where shops typically lose ground on rental days
Most LOR loss is not dramatic. It is one or two days at a time, on claims that look unremarkable, accumulating across the book. The pattern is consistent across MPI, SGI, and private-DRP shops.
- Teardown happens, but the estimator does not pull the OEM repair procedure at write-up. The calibration trigger or one-time-use part is caught at reassembly instead of write-up - that is a 2 to 4 day supplement-and-reorder cycle.
- Parts are ordered off the initial estimate but the estimate was incomplete, so the shop holds the vehicle waiting on a second parts run that could have been combined.
- Supplements are submitted in pieces. Each piece triggers a separate carrier review cycle. Three small supplements equal three approval delays.
- Calibration sublet is scheduled when the vehicle is mechanically complete, not when the calibration-triggering part is ordered. The vehicle waits a day or two for the sublet appointment.
- Customer pickup is not scheduled until the QC sign-off. Vehicles sit complete for 12 to 36 hours before the customer is contacted, which adds rental days the carrier still pays for.
- Total-loss determinations are made late. A vehicle that should have been declared total at teardown but was not declared until first supplement absorbs 5 to 10 unnecessary rental days.
6. The math: what a complete write-up actually saves on rental
On a moderate-severity Canadian collision claim - call it $6,500 in damages, mid-size SUV, one ADAS calibration trigger - the difference between a complete write-up and a typical multi-supplement claim is roughly 1.5 to 2.5 keys-to-keys days. At Canadian rental rates of $45 to $70 per day plus taxes and the loss-of-use exposure for the customer, that is real money on the carrier side and real scorecard movement on the shop side.
| Stage | Typical (multi-supplement) | Documentation-first |
|---|---|---|
| FNOL to drop-off | 2-4 days | 2-4 days |
| Teardown to first parts order | 1-2 days | Same day as write-up |
| First supplement cycle | 1-2 days | Folded into write-up |
| Second supplement cycle | 1-2 days | Rare / eliminated |
| Calibration sublet wait | 1-3 days | 0-1 day (pre-booked) |
| QC to customer pickup | 0.5-1.5 days | Same day |
| Total keys-to-keys | 5.5-10.5 days | 3.5-7 days |
7. Where total-loss timing fits into LOR
Total-loss frequency in Canada rose in 2023 and has stayed elevated, partly because newer vehicles with ADAS content and structural complexity hit the threshold faster. The LOR cost on a late-declared total is significant: every day between teardown and total-loss declaration is a rental day the carrier pays with zero repair value created.
Shops that flag probable totals at the write-up stage - based on apparent severity, structural rail involvement, airbag deployment count, and high-cost calibration triggers - help the carrier avoid the worst kind of LOR: rental days spent on a vehicle that was never going to be repaired. This is one of the most underrated levers a shop has to improve its scorecard standing without doing any additional repair work.
8. How RocketPros aligns to rental-day performance
RocketPros is independent software that runs alongside Mitchell Connect or CCC ONE. It does not replace MPI, SGI, or private-DRP rules - the published carrier program and the OEM procedure remain the source of truth. What RocketPros does is surface estimate-completeness signals at write-up, so the items that drive LOR (calibration triggers, one-time-use hardware, pre/post scans, corrosion protection, sectioning operations, sublet scheduling) are flagged before the estimate is locked rather than caught at reassembly.
Operationally that means three things for a Canadian shop: (1) supplements get batched and submitted with full OEM procedure documentation attached, reducing carrier round-trips; (2) parts orders go out off a more complete first estimate, reducing second-run delays; and (3) calibration sublets are flagged at write-up so they can be booked against the parts arrival date instead of the reassembly date. Claim-level metrics flow back to the shop so the management team can see which estimators and which claim types are driving the keys-to-keys gap, separately from raw LOR.
- Surfaces calibration triggers and OEM-required operations at write-up, before the estimate locks.
- Flags one-time-use fasteners, sectioning procedures, and pre/post scan requirements per VIN.
- Reports keys-to-keys, supplement frequency, and re-inspection signals back to shop management.
- Runs alongside Mitchell Connect or CCC ONE - does not replace the estimating platform or the carrier rule set.
9. The carrier perspective: why LOR is a downstream metric
From an MPI, SGI, or private-DRP program-management view, LOR is the visible cost line, but it is a downstream output of write-up discipline, supplement frequency, and re-inspection rate. A program manager who pushes shops to compress LOR without also tracking supplement count and re-inspection rate is creating an incentive to skip operations - which shows up later as comeback claims, customer complaints, and sublet calibrations that should have been captured the first time.
The carriers who get this right look at LOR alongside three companion metrics: supplements per claim, comeback/re-inspection rate, and CSI. A shop that improves on all four simultaneously is genuinely getting better. A shop that improves only LOR while supplements per claim hold steady or rise is shifting risk, not creating value.
10. What good looks like in 2026
The benchmark Canadian shop in 2026 is running 4 to 6 keys-to-keys days on moderate-severity claims, fewer than 1.5 supplements per claim on average, a re-inspection rate under 5%, and a CSI consistent with top-quartile DRP performance. LOR follows from those four numbers - it is not a separately optimizable input.
| Metric | Lagging | Average | Top quartile |
|---|---|---|---|
| Keys-to-keys days | 8+ | 5.5-7.5 | 4-5 |
| Supplements per claim | 2.0+ | 1.3-1.8 | Under 1.2 |
| Re-inspection rate | 8%+ | 4-7% | Under 4% |
| Calibration captured at write-up | Under 60% | 60-80% | Over 90% |
| LOR (rental days) | 10+ | 6-9 | 5-7 |
Implications
For shop owners and estimators
- Treat LOR as an output of write-up discipline, not as a target to optimize directly - chasing rental days in isolation creates pressure to skip operations.
- Pull the OEM repair procedure at teardown, not at reassembly. Calibration triggers, one-time-use hardware, and sectioning operations belong on the initial estimate.
- Order parts off a complete first estimate and book calibration sublets against the parts arrival date, not the reassembly date.
- Batch supplements into single submissions with full OEM procedure documentation attached. Each separate supplement adds carrier review lag.
- Flag probable totals at write-up. Late total-loss declarations are the highest-cost rental days a shop can put on a carrier's books.
- Track keys-to-keys days, supplements per claim, and re-inspection rate together. LOR alone hides the trade-offs.
For insurance carriers
- Score LOR alongside supplement frequency, re-inspection rate, and CSI - not in isolation - to avoid incentivizing skipped operations.
- Recognize that 2024-2025 LOR declines are partly a mix-shift effect from rising total-loss frequency, not pure operational gain.
- Reward shops that flag probable totals early. Late total-loss declaration is one of the most expensive avoidable rental patterns.
- Use claim-level keys-to-keys data, where available, to separate shop-controlled cycle time from FNOL-to-drop-off lag the shop cannot influence.
- Treat write-up completeness signals (calibration capture rate, supplement count) as leading indicators of LOR performance.
Frequently asked
What is the average length of rental on a Canadian collision claim in 2026?+
Canadian average rental length on repairable collision claims has been running in the 6 to 9 day range on moderate-severity claims, with top-quartile DRP and accredited shops landing closer to 5 to 7 days. The number has dropped roughly one full day from the 2022-2023 peak as parts availability normalized, according to Enterprise's Average Rental Length reporting and Canadian Underwriter coverage. Severity mix matters: claims involving structural sectioning or multiple ADAS calibrations run longer, and total-loss frequency rising in 2023 has mechanically pulled the repairable-only average down without representing pure cycle-time improvement.
How do MPI and SGI score rental days on accredited shops?+
MPI under the Light Vehicle Accreditation Agreement and SGI under its accredited-shop program both reference rental-related signals inside broader cycle-time and supplement-discipline metrics that feed accreditation review. Neither program scores LOR as a single isolated number - it sits alongside keys-to-keys days, supplements per claim, re-inspection rates, alternative parts use (RPS on MPI), and customer satisfaction. A shop with low LOR but high supplement frequency or a high re-inspection rate is flagged as cutting estimates short, not as a top performer. The published carrier program documents are the source of truth.
Should shops order parts before the estimate is fully approved to save rental days?+
Yes, when the initial estimate is genuinely complete - meaning teardown has been performed, the OEM repair procedure has been pulled, calibration triggers and one-time-use hardware are captured, and the structural assessment is locked. Ordering parts off a complete write-up typically saves 1 to 3 calendar days versus waiting for first-supplement approval. The risk is ordering parts that get changed by a later supplement, which is why write-up completeness has to come before early parts order. Shops that order early off incomplete estimates trade rental days for parts-return cost and approval friction.
How much rental time does a single supplement add?+
A single supplement on a Canadian DRP or accredited claim typically adds 1 to 2 calendar days of cycle time, depending on the carrier's review queue and the documentation attached. Three small drip-fed supplements can add 3 to 6 days versus a single batched submission with full OEM procedure documentation attached. The cycle-time cost of supplements is one of the largest controllable LOR drivers, which is why batching - submitting one complete supplement rather than several partial ones - matters more than the individual line items.
Does cutting LOR force shops to skip OEM-required procedures?+
It should not, and shops that compress LOR by skipping pre/post scans, calibrations, corrosion protection, or sectioning operations are transferring risk to the carrier and the customer rather than creating value. The published OEM position statement and the carrier program rules remain the source of truth on what must be performed. Real LOR compression comes from documentation timing - capturing required operations at write-up, batching supplements, and pre-booking sublets - not from removing operations. Carriers who score LOR alongside supplement count, re-inspection rate, and CSI catch the shortcut pattern.
How does total-loss frequency affect reported rental length?+
Rising total-loss frequency mechanically lowers the reported average rental length on the repairable-only segment because the longest, most severe claims get pulled out of the repairable pool and into the total-loss pool. Canada saw total-loss frequency rise in 2023 according to Enterprise's reporting and Collision Repair Magazine coverage, which means part of the LOR improvement carriers have observed since 2023 is mix-shift rather than operational gain. Late total-loss declarations are also one of the most expensive avoidable rental patterns - a vehicle declared total at first supplement instead of teardown can absorb 5 to 10 unnecessary rental days.
What is the difference between LOR and keys-to-keys days?+
LOR is the rental-side number: every billable day from when the customer picks up the rental to when they return it. Keys-to-keys days is the shop-side number: from drop-off to delivery. The two diverge because LOR includes pre-drop-off lag (FNOL to drop-off) and any delay between repair-complete and customer pickup, neither of which the shop fully controls. A shop can hit its keys-to-keys target and still post a high LOR if the customer started the rental at FNOL and the vehicle waited four days for a teardown bay. Tracking both numbers separately is the only way to see what is shop-controlled.
Citations
- [1]Canadian Underwriter - 'Why length of collision-related car rentals is going down' (industry analysis on Enterprise ARL trends in Canada).https://canadianunderwriter.ca/news/claims/why-length-of-collision-related-car-rentals-is-going-down/
- [2]Canadian Underwriter - 'Why it's taking repair shops almost one less day to fix your clients' car' (cycle-time recovery post-COVID).https://canadianunderwriter.ca/news/claims/why-its-taking-repair-shops-almost-one-less-day-to-fix-your-clients-car/
- [3]Collision Repair Magazine - 'Length Lookout: Total Loss Frequency in Canada increased in 2023' (Enterprise Average Rental Length report coverage).https://www.collisionrepairmag.com/length-lookout-total-loss-frequency-in-canada-increased-in-2023-reveals-enterprise-average-rental-length-report/
- [4]Manitoba Public Insurance - Body Shop & Glass Information portal (Light Vehicle Accreditation Agreement, program bulletins, RPS framework).https://www.mpi.mb.ca/
- [5]Saskatchewan Government Insurance - Accredited repair facility program documents and shop information.https://www.sgi.sk.ca/
- [6]Insurance Bureau of Canada - industry data on auto insurance, claims frequency, and total-loss trends.https://www.ibc.ca/
- [7]Statistics Canada, Consumer Price Index - vehicle parts, maintenance and repairs (Table 18-10-0004-01).https://www150.statcan.gc.ca/
- [8]Canadian Collision Industry Forum (CCIF) - industry positions and cycle-time benchmarking discussions.https://ccif.ca/
- [9]CCC Intelligent Solutions, Crash Course Report - North American repairable severity benchmarks and cycle-time data.https://cccis.com/
- [10]Mitchell International, Industry Trends Report - claims frequency, severity, and operational benchmarks.https://www.mitchell.com/
- [11]Society of Collision Repair Specialists (SCRS) - cycle-time, supplement, and documentation guidance for repairers.https://www.scrs.com/
- [12]Repairer Driven News - reporting on OEM position statements, calibration requirements, and DRP program changes.https://www.repairerdrivennews.com/
What this looks like inside RocketPros
The audit logic, scoring, and documentation patterns in this paper map directly to four RocketPros modules. If you want this applied to your shop's real estimates, start with the module that fits the workflow you're trying to fix.
- RPS ComplianceTrack MPI, SGI, and DRP program risk before it affects scorecards.
- Estimate AnalysisCatch missed labor, materials, parts, and documentation gaps before submission.
- AutomationRead saved Mitchell, CCC, and Audatex files without manual upload.
- ADAS CalibrationSurface calibration triggers tied to sensors and OEM procedures.
Figures cited from CCC Crash Course, Mitchell Industry Trends, IIHS-HLDI, AAA Foundation, BLS, Statistics Canada, IBC, and provincial insurer reports are sourced from those organizations' published materials. Where RocketPros corpus analysis is referenced, it reflects aggregated estimate data across the platform's customer base and is presented for directional accuracy. Nothing in this paper constitutes legal, regulatory, or coverage advice. RocketPros is independent software and is not endorsed by or affiliated with MPI, SGI, ICBC, SAAQ, or any private auto insurer.