The Caterpillar 320 is the most-deployed mid-class excavator in commercial operations globally. Across our Caribbean and African service area, the 320 dominates 20-25 tonne mid-class fleet purchases — for good reason. Here's the complete review.
Specs at a glance
- Operating weight: 22.5 tonnes
- Engine: Cat C4.4 ACERT, 121 hp gross / 162 hp Next Gen
- Bucket capacity: 0.9-1.2 m³ configurable
- Max dig depth: 6.7m
- Max reach: 9.9m
- Fuel tank: 410 L
Real-world fuel consumption
Across customer fleets in Ghana, Nigeria, and Suriname, we've measured 20-25 L/h on standard construction duty with the Next Gen 320, and 22-28 L/h on the older 320E variants. Eco mode delivers ~10% saving. Total annual fuel cost at 2,000 hours: $48-60k.
Parts and service
Tractafric, Mantrac, Bia, and Empresa each provide CAT parts and service across African markets — easily the strongest dealer network of any brand. Routine wearing parts available within 24-72 hours; major components 1-3 weeks. Total annual parts spend at 2,000 hours: $14-18k.
5-year ownership math
| Cost | Year 1-5 total |
|---|---|
| Acquisition (financed 50%) | $170,000 |
| Fuel (5 × $54,000) | $270,000 |
| Parts + service | $80,000 |
| Operator labour | $60,000 |
| Major rebuild yr 4 | $45,000 |
| Financing interest | $22,000 |
| Total 5-yr cost | $647,000 |
| Resale value yr 5 | ($85,000) |
| Net 5-yr cost | $562,000 |
Verdict
The CAT 320 is the safest mid-class purchase decision available. Premium pricing, but parts availability and resale value retention more than justify the upfront. Best for: established contractors prioritising uptime over upfront price.