The verdict in three sentences
A multi-brand dealership in Miami cannot rely on the DMS imposed by a single OEM: each brand has its own tool, and the general manager has no consolidated view. A custom DMS costs USD 33,000 to 100,000 (about 20 to 60 million FCFA) and brings together vehicle inventory, repair orders, parts, financing and SMS service reminders. With 40,000 service visits a year, gaining 15% service retention is enough to pay back the project well within 2 years.
OEM DMS, off-the-shelf DMS or custom
OEMs often require their own tool for orders and warranty, but those systems handle multi-brand operations, modern payment flows and local realities (imported used cars, fleet accounts, F&I partners) poorly.
| Option | Upfront cost | Annual cost | Multi-brand | Mobile and wallet payments | Timeline |
|---|---|---|---|---|---|
| OEM-mandated DMS | USD 0 to 8,000 | USD 10,000 to 25,000 per brand | No | No | 1 to 3 months |
| Off-the-shelf enterprise DMS | USD 25,000 to 50,000 | USD 20,000 to 42,000 | Partial | Rarely | 4 to 6 months |
| Spreadsheets and POS | USD 800 | USD 1,600 | Manual | Manual | Immediate |
| Custom DMS, service and parts phase | USD 33,000 to 50,000 | USD 5,000 to 8,000 | Yes | Yes | 4 to 5 months |
| Full custom DMS (sales, F&I, BI) | USD 66,000 to 100,000 | USD 8,000 to 15,000 | Yes | Yes | 7 to 9 months |
| SMS gateway (reminders) | USD 0 | USD 0.01 to 0.04 per SMS | N/A | N/A | 2 weeks |
2026 orders of magnitude for a dealership with 60 to 120 employees. A custom build does not necessarily replace the OEM tool: it connects to it via API or file import for warranty and factory orders.
What the DMS must cover
- Vehicle inventory: new, used, demo units and vehicles in transit, with landed cost including freight and preparation.
- Repair orders: check-in, estimate, customer approval by text or WhatsApp, technician time clocking, invoice.
- Parts: stock by bin location, reorder thresholds, turnover, cycle counting.
- Service reminders: automatic SMS at 6,000 miles or 6 months, oil change reminders, OEM recall campaigns.
- Financing and fleets: credit applications with partner lenders, fleet contracts with monthly billing.
| Service KPI (40,000 visits/year) | Before DMS | After custom DMS | Estimated gain |
|---|---|---|---|
| 12-month service retention rate | 38% | 44% | +15% visits |
| Average repair order | USD 140 | USD 151 | +8% |
| Check-in time per vehicle | 25 min | 12 min | -52% |
| Parts stock-outs per month | 120 | 45 | -62% |
| Invoicing delay after repair | 2 days | Same day | Faster cash flow |
| Obsolete parts inventory | 18% | 9% | Capital freed |
Mini case study
Carlos runs a multi-brand dealership in Miami: 900 new vehicles sold and 40,000 service visits a year, average repair order of USD 140, or USD 5.6 million in fixed operations revenue. He invests USD 75,000 in a custom DMS, plus USD 10,000 of annual maintenance.
SMS reminders lift service visits from 40,000 to 46,000 a year (+15%). With a 35% gross margin in the service department, the 6,000 extra visits represent 6,000 × 140 × 0.35 = USD 294,000 of additional margin. SMS costs, 50,000 customers × 4 messages × USD 0.03, or USD 6,000, remain marginal. Even dividing the gain by three, the investment pays back in under 10 months.
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FAQ
Can a custom DMS talk to the OEM system?
Yes, through an API when available or scheduled file exchanges. This connector usually costs USD 3,000 to 8,000 per brand.
How long until go-live?
Allow 4 to 5 months for the service and parts phase, then 3 to 4 months for sales and financing. Training 30 to 50 users takes about 2 weeks.
Can we take mobile wallet payments in the service lane?
Yes, the DMS generates a payment link or QR code on the invoice. Wallet and pay-by-link fees typically run 1 to 2.9%, versus 2.5 to 3.5% for card-present processing with some providers.
Does the software work during an internet outage?
Service check-in can run offline on tablets and sync when the connection returns. This mode adds USD 5,000 to 10,000 to the budget.
What happens to our historical data?
Vehicle and customer history (often 5 to 10 years) is migrated from spreadsheets or the previous system. Allow 3 to 4 weeks for cleaning and de-duplication.
Let's scope your project. Tell us your brands, your sales and service volumes and your current tools: we will price a custom DMS in phases, from USD 33,000 to 100,000, delivered in 4 to 9 months. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
