Car Rental Industry Terminology

ADR (Average Daily Rate)

The average base rental rate earned per paid rental day, excluding taxes, fees, and most ancillaries. Used to benchmark pricing performance across segments, locations, and time periods.

Airport ADR is up $6 weekend-over-weekend; Target an ADR lift through class mix and fenced offers; ADR lagged comps, so we tightened discounts.

Ancillary Revenue

Revenue from add-ons and fees beyond the base rental rate (e.g., protection products, fuel options, GPS, toll passes, child seats, underage fees). A key lever for profitability and dollar utilization.

Boost ancillary revenue by raising attachment on SLI and tolls; Ancillaries contributed 24% of total RPD; Train agents to improve extras attachment rate.

Book-to-Fleet Ratio (BTF)

Forward bookings divided by on-rentable fleet for a given period; indicates sell-out risk and informs pricing and fleet moves. Values above 100% signal oversell conditions.

July 4th BTF is 118%—raise rates and pull units from nearby stations; Low weekday BTF—open opaque channels; BTF dipped after storm cancellations.

Buyback Program

An OEM agreement to repurchase vehicles at a preset time/mileage or price, reducing residual risk and smoothing de-fleet timing.

Shift to more buybacks to de-risk residuals; The 12‑month/24k buyback window opens in Q3; Buyback units must meet OEM turnback standards.

CDW (Collision Damage Waiver)

An optional waiver that reduces or eliminates the renter’s financial responsibility for damage to the rental vehicle, subject to terms/exclusions; not an insurance policy.

CDW uptake improved after agent training; Damage billed because renter declined CDW; Country rules limit CDW deductible.

Concession Agreement

A contract with an airport or public authority that grants the right to operate in exchange for fees (often a percent of gross revenue) and obligations (e.g., MAG, staffing, brand standards).

We exceeded the MAG under the concession; Audit your concession fees on ancillaries; New RFP issued for Terminal B concession.

Damage Recovery Unit (DRU)

The team, process, and systems that pursue and manage claims for vehicle damage, loss of use, diminished value, and related recovery.

DRU initiated a claim for rear‑end damage; Update DRU workflows to shorten cycle time; LOU recovery rate improved under DRU policy changes.

Dynamic Pricing

Algorithmic rate adjustments in near real time based on demand signals, competitor rates, inventory, events, and booking pace to maximize revenue.

Tighten price fences as BTF rises; Dynamic pricing raised weekend ADR 9%; Ruleset throttled discounts during peak.

EBITDA

Earnings before interest, taxes, depreciation, and amortization; a common measure of operating performance in capital‑intensive rental businesses.

Fleet depreciation pressured EBITDA margin; Bank covenants reference EBITDA; Ancillary growth offset soft ADR in EBITDA.

Electric Vehicle (EV) Readiness

Operational preparedness to deploy EVs at scale: charging infrastructure, telematics, training, range and charging policies, pricing, and turnaround processes.

Site EV‑readiness score improved after installing DC fast chargers; Adjust cleaning bays for EV cords; EV idle fees added to manage charging dwell.

Fleet Utilization

Percentage of time vehicles are on rent (time utilization) and/or revenue generated per unit (dollar utilization). Core capacity and profitability metric.

Target 82% time utilization weekdays; Dollar utilization rose on strong ancillaries; Rebalance fleet to lift utilization at downtown.

Frontline Ready (FLR)

Vehicles that are cleaned, fueled, damage‑checked, and available to rent. FLR rate indicates operational readiness.

FLR dipped during the morning peak; Increase staffing to improve FLR by 10 a.m.; Telematics will speed FLR confirmation.

GDS (Global Distribution System)

Travel distribution networks (e.g., Amadeus, Sabre, Travelport) used by TMCs/agents to shop and book rates, classes, and locations.

Load the corporate rate into all GDSs; Update ACRISS mapping in the GDS; Audit GDS passive segments for accuracy.

Grace Period

The allowed time after the scheduled return before additional time/day charges apply (varies by brand/market).

We offer a 29‑minute grace period; No grace on prepaid hourly rentals; Extend grace during weather disruptions.

Hard Hold

A system status that locks a specific vehicle from rental (e.g., safety recall, maintenance, VIP allocation, investigation).

Place a hard hold for the recall campaign; Remove hard hold once bodywork completes; Hard‑held units depress FLR.

Holdover Days

Days accrued when a renter keeps a vehicle beyond the contracted return time; impacts utilization, rate integrity, and forecasting.

Holdovers spiked after the storm; Call to convert holdovers to extensions; Holdover fees applied per policy.

In-Fleet

The process/date when a new vehicle is received, inspected, equipped, and activated into rentable status.

In‑fleet all compacts by Friday; Delay in‑fleet pending telematics install; In‑fleet date drives depreciation start.

Insurance Replacement Segment (IR)

Rentals billed to insurers, body shops, or third parties when a customer’s vehicle is being repaired or replaced. Typically longer LOS and negotiated rates.

IR mix reached 35% this month; Coordinate with shops for direct billing; IR extension rates require insurer approval.

Journey Mapping

Analyzing the end‑to‑end customer experience to identify friction and opportunities (pre‑trip, counter, pickup, in‑rent, return, post‑trip).

Journey mapping flagged counter wait pain points; Add proactive texts at ERT; Redesign the return lane per journey insights.

Kiosk Check-in

Self‑service terminals that verify identity, upsell products, capture signatures, and dispense contracts/keys to reduce queues.

Kiosks cut average wait by 4 minutes; Enable CDW and SLI upsell flows on kiosks; Route prepaid customers to kiosks.

KPI (Key Performance Indicator)

Quantifiable metrics used to track performance (e.g., ADR, RPD, utilization, BTF, NPS, queue time).

Daily KPI huddle reviews ADR and FLR; Missed the NPS KPI goal at airport; Add a KPI for attachment rate.

Loss of Use (LOU)

Recoverable revenue for the time a damaged vehicle is unavailable to rent; often pursued via DRU and subject to legal standards.

Claim includes repair costs plus LOU; Court accepted fleet utilization as LOU basis; Telematics validated LOU days.

LPR (License Plate Recognition)

Camera/AI systems that read plates to automate gate access, returns, toll reconciliation, and security.

LPR speeds exit at busy stations; Use LPR to locate overdue returns; Integrate LPR with yard inventory.

Maintenance Expense per Unit (MEPU)

Average maintenance and repair cost per vehicle over a period; used to benchmark fleet health by class/age.

SUV MEPU rose with tire wear; Cap MEPU by retiring high‑cost units; MEPU improves after PM compliance.

Merchant of Record (MOR)

The entity that processes the customer’s payment and bears chargeback/refund liability; can be the rental company or an OTA.

OTA is MOR on prepaid bookings; Switching MOR affects tax handling; MOR choice impacts chargeback rates.

No-Show Rate

Share of reservations that fail to pick up without canceling; impacts overbooking strategy and staffing.

No‑shows spike on late flights; Tighten deposit rules to curb no‑shows; Calibrate overbooking to historical no‑show.

NPS (Net Promoter Score)

Customer loyalty metric (−100 to +100) based on likelihood to recommend; tracked by location, segment, channel.

NPS fell due to wait times; Agent recognition tied to NPS; Close the loop on Detractors within 48 hours.

OEM (Original Equipment Manufacturer)

Vehicle manufacturers that supply fleet via buyback or risk deals; relationships shape mix, cost, and timing.

Negotiate more vans with the OEM; OEM recall creates hard holds; OEM incentives lower CPU.

OTA (Online Travel Agency)

Online intermediaries that list and sell rental inventory (e.g., Expedia, Booking). Affect visibility, price parity, and MOR.

Increase OTA share midweek; Parity alert: OTA undercut brand.com; Load opaque rates on OTAs to fill shoulder periods.

PAI/PEP (Personal Accident Insurance/Personal Effects Protection)

Optional products covering certain medical costs for occupants (PAI) and theft of personal belongings (PEP), subject to policy limits.

Train on PAI/PEP disclosures; Attachment on PAI/PEP rose 3 points; Claims trends informed new PAI limits.

Prepaid Rate

Discounted rate paid at booking with stricter change/cancel rules; reduces no‑shows and improves cash flow.

Push prepaid to firm up weekend demand; Prepaid bookings have shorter counter times; Clarify prepaid refund policy.

Queue Busting

Deploying mobile agents, tablets, or line management to shorten wait times and improve throughput.

Queue bust with roving check‑in; Text‑to‑kiosk reduced queue length; Add greeters during peak flights.

Rate Code

Identifier for a specific price plan, fence, or corporate agreement that drives eligibility, inclusions, and reporting.

Load ABC123 rate code into all channels; Rate code includes one free additional driver; Audit rate‑code leakage to leisure.

Revenue per Day (RPD)

Total revenue (base rate plus ancillaries and many fees) divided by rental days; complements ADR and dollar utilization.

RPD up $4 on higher toll package sales; Raise RPD via class upgrades; RPD lagged due to fee waivers.

SIPP/ACRISS Code

Standard 4‑character code set that describes vehicle category, body, transmission/drive, and fuel/AC (e.g., ECMR, IFAR).

Map our fleet to correct SIPP codes; Customer booked IFAR, upgrade to SFAR; GDS shows wrong SIPP—fix mapping.

SLI (Supplemental Liability Insurance)

Optional third‑party liability protection that extends coverage above minimums; terms vary by market.

SLI attachment improved after training; Explain SLI vs. CDW clearly; Corporate policy includes SLI.

Telematics

Connected‑vehicle hardware/software that provides GPS location, mileage, fuel/charge level, diagnostics, and event data.

Use telematics to verify fuel level at return; Geofence alerts for unauthorized usage; Telematics accelerates turn time.

Turn Time (TT)

Elapsed time from vehicle return to Frontline Ready; key to increasing peak availability.

TT target is under 45 minutes; Bottleneck at wash bay raises TT; Add staffing to cut TT before the noon push.

Unconstrained Demand

Forecasted demand assuming no capacity or price constraints; used to set overbooking levels and pricing curves.

Unconstrained demand suggests sell‑out Saturday; Lower price fences until actuals meet unconstrained curve; Calibrate RMS on unconstrained demand.

Upsell

Selling a higher car class or additional products/services to increase revenue and customer value.

Upsell from ICAR to FCAR at check‑in; Bundle CDW and SLI for value; Digital upsell offers during online check‑in.

Vehicle License Fee (VLF)

A fee charged to recover governmental costs of vehicle registration and licensing; typically itemized on invoices.

VLF shown separately from base rate; Audit VLF remittance by state; Ensure VLF disclosure meets regulations.

VIN (Vehicle Identification Number)

Unique 17‑character identifier for a vehicle, used for tracking, telematics provisioning, recalls, and remarketing.

Scan VIN to in‑fleet the unit; VIN ties to OEM recall list; VIN mismatch blocked rental.

Walk-Up Rate

Pricing offered to customers without reservations at the counter; often higher and yield‑managed to protect availability.

Set walk‑up rates at rack + premium; Walk‑up surge during convention; Display walk‑up price on digital boards.

Wholesale Remarketing

Disposing of vehicles via auctions, wholesale buyers, or dealer channels rather than retail to consumers.

Move high‑mileage sedans to wholesale; Auction lanes favored SUVs this week; Wholesale net backs beat forecasts.

X-Border Rental

A rental that permits crossing national borders; requires documentation, insurance validation, and sometimes fees or restrictions.

Enable x‑border to Canada on SUVs; Add cross‑border letter at counter; X‑border fee applies for Mexico travel.

XML/API Connectivity

System‑to‑system integrations that push/pull rates, availability, and reservations in real time between RMS, CRS, OTAs, and partners.

XML rate push failed—check mapping; API parity monitors competitor rates; Add car‑class in the API schema.

Yield Management

Optimizing price and capacity over time to maximize revenue and profit given demand patterns, constraints, and competitive dynamics.

Tighten yield fences for festival week; Shift mix to SUVs to lift yield; Use unconstrained demand for yield curves.

Young Driver Surcharge

Additional fee applied to renters below a specified age threshold; varies by market, car class, and product.

Young driver surcharge waived on corporate X; Age 21–24 incur $25/day; Policy prohibits performance cars for young drivers.

Zero-Emissions Vehicle (ZEV)

A vehicle that produces no tailpipe emissions (e.g., battery electric, hydrogen fuel cell); increasingly part of sustainability mandates.

ZEV share must reach 20% by 2027; Add ZEV badges to filters online; Plan ZEV charging capacity by stall.

Zone Pricing

Setting different rates by geographic pickup/return zones within a metro to reflect demand, cost, and competitive intensity.

Airport zone priced +$12 vs downtown; Create suburban weekend zone deals; Adjust zone fences after new competitor opens.