When booking a yacht charter in Marbella, two of the most popular choices in our Tier A fleet are the Astondoa 40 and the Azimut 39. Both measure 12.5 metres and depart from Puerto Banús, but their fuel consumption differs enough to matter for cost-conscious groups. This comparison breaks down the real fuel costs, engine specs, and overall value so you can choose the right boat for your day on the Costa del Sol.
All charters include fuel, skipper, drinks, snacks, and IVA—but understanding the numbers helps you plan smarter.
Astondoa 40 vs Azimut 39: Engine Specs and Fuel Consumption
Both boats are powered by twin diesel engines, but with different configurations that affect fuel burn.
- Astondoa 40: 2× Volvo Penta D6-370 (740 hp total). Cruise speed ~22 knots, fuel consumption ~110 L/h.
- Azimut 39: 2× Cummins QSB5.9-380 (760 hp total). Cruise speed ~22 knots, fuel consumption ~120 L/h.
The Astondoa 40 is about 8% more fuel-efficient at cruising speed, burning roughly 10 fewer litres per hour. Over a full 8-hour day, that difference adds up to 80 litres saved.
Real Fuel Cost Comparison for 8-Hour Charter
Based on current Marbella diesel prices of approximately €1.90 per litre (as of mid-2025), here are the estimated fuel costs for an 8-hour charter:
| Boat | Fuel consumption (L/h) | Total fuel (8h) | Fuel cost (€) |
|---|---|---|---|
| Astondoa 40 | 110 | 880 L | €1,672 |
| Azimut 39 | 120 | 960 L | €1,824 |
The Azimut 39 costs roughly €152 more in fuel for an 8-hour day. However, both boats are priced at the same Tier A charter rate: €2,299 for 8 hours, which already includes all fuel. So the fuel cost difference doesn't affect your out-of-pocket expense—it's more about the boat's efficiency profile.
Half-Day Charter (4 Hours) Fuel Savings
For a 4-hour charter (€1,149), the fuel burn is halved:
- Astondoa 40: ~440 L → €836
- Azimut 39: ~480 L → €912
The Astondoa 40 saves about €76 on fuel over the Azimut 39 for a half-day. While still within the all-inclusive rate, the Astondoa is the more economical choice if you're tracking environmental impact or just want the lighter fuel footprint.
Which Boat Should You Choose?
Fuel cost is only one factor. Consider these points:
- Passenger capacity: Astondoa 40 (9 pax) vs Azimut 39 (11 pax). The Azimut fits two extra guests.
- Onboard layout: The Astondoa 40 has a spacious aft deck and sun pads; the Azimut 39 offers a more enclosed saloon with larger windows.
- Charter value: Both are identical in price, so if you need more seats, the Azimut 39 is better value per person.
For smaller groups or those prioritising fuel efficiency, the Astondoa 40 is the winner. For larger parties, the Azimut 39 gives you more space without extra fuel cost to you.
Where You'll Cruise from Puerto Banús
Both boats depart from Puerto Banús, the heart of Marbella's luxury marina. Typical itineraries include cruising past the Golden Mile, stopping at Cala del Faro or Cala Cortés for swimming, and heading toward Cabopino or Estepona for lunch. With fuel included, you can explore freely without watching the gauge.
For a full overview of all our boats, visit our Boat Rental Marbella fleet page.
Fuel Price Fluctuations and Your Charter
Diesel prices in Marbella can vary by season, but your charter rate is fixed. Whether fuel is €1.80/L or €2.10/L, you pay the same €749 for 2 hours or €2,299 for 8 hours. This makes budgeting simple—no surprise fuel surcharges.
Both the Astondoa 40 and Azimut 39 are efficient for their size, but the Astondoa has a slight edge in fuel economy. If you're curious about other options, check out our Astondoa 40 vs Azimut 39 fuel cost comparison for more details.
Frequently asked questions
Which boat has lower fuel consumption, the Astondoa 40 or the Azimut 39?
The Astondoa 40 is slightly more fuel-efficient, burning about 110 litres per hour at cruising speed compared to the Azimut 39's 120 L/h. Over an 8-hour charter, that difference saves roughly €95 at current diesel prices. However, both boats are close in performance and running costs.
Is fuel included in the charter price for the Astondoa 40 and Azimut 39?
Yes. For both the Astondoa 40 and Azimut 39, all Tier A charters include fuel, a licensed skipper, water, soft drinks, beer, wine, cava, light snacks, insurance, safety equipment, and Spanish IVA (21%). The published rates (€749/2h → €2,299/8h) cover everything—no hidden fuel surcharges.
How much does it cost to fuel an Astondoa 40 for a full day in Marbella?
At a consumption of ~110 L/h and current Marbella diesel prices around €1.90/L, an 8-hour day would cost roughly €1,045 in fuel. Since fuel is included in the charter rate, you pay the flat €2,299 regardless of how much you cruise.
How much does it cost to fuel an Azimut 39 for a full day in Marbella?
The Azimut 39 burns ~120 L/h, so an 8-hour charter consumes about 960 litres. At €1.90/L, that's approximately €1,140 in fuel. Again, this is covered by the all-inclusive Tier A rate of €2,299 for 8 hours.
Which boat is more cost-effective for a half-day charter (4 hours)?
For a 4-hour charter, both boats cost €1,149 (Tier A pricing). The Astondoa 40 would burn ~440 L (€836) and the Azimut 39 ~480 L (€912). The Astondoa saves about €76 on fuel, but the margin is small. Choose based on passenger capacity and layout preferences.
Can I reduce fuel consumption on either boat during the charter?
Yes. Your skipper will typically cruise at economical speeds (18-22 knots) to minimise fuel burn. Anchoring for swimming stops also reduces engine hours. Both boats are efficient at displacement speeds, but for a Marbella charter, you'll want to enjoy the coast—so the included fuel rate is good value.
What are the passenger capacities of the Astondoa 40 vs Azimut 39?
The Astondoa 40 carries up to 9 passengers, while the Azimut 39 can take up to 11. If you have a larger group, the Azimut 39 offers two extra spots. Both are ideal for families or small groups exploring the Marbella coastline from Puerto Banús.
Do the fuel costs vary by season in Marbella?
Diesel prices in Marbella fluctuate with global markets, but the difference is usually small within a season. Summer demand can push prices up slightly, but since fuel is included in your charter rate, you're protected from price spikes. The €749/2h and €2,299/8h rates are fixed year-round.