Mercedes-Benz SL-Class vs Saab 9-3
A detailed look at how two of Australia's most popular Convertibles compare on price, running costs, safety, and everyday livability.
Specifications and pricing correct at time of publishing. Prices are RRP before on-road costs unless stated otherwise. Always confirm with the manufacturer or dealer before purchasing.
Mercedes-Benz SL-Class
From $386,500
Convertible
Petrol
Petrol
430kW
13.9 L/100km
ANCAP: no data
213L
Saab 9-3
Price TBC
Convertible
Petrol
2.0L 4cyl Turbo Petrol 91RON
—
9.7 L/100km
ANCAP: no data
258L
Saab 9-3: we're still completing price, length, width, height and wheelbase, plus 7 others.
A blank cell below means we don't have that figure, not that the car scores badly on it. We leave them empty rather than estimate, so any row where one car is blank isn't a like-for-like comparison yet.
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Price Breakdown
Pricing for one or both models is yet to be confirmed for the Australian market. We will update this comparison when official RRPs are announced.
Safety Rundown
ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.
Feature Showdown
Both come with modern infotainment systems.
The Mercedes-Benz SL-Class stands out with wireless Apple CarPlay/Android Auto, head-up display, wireless charging, panoramic roof, heated front seats, Burmester audio and ambient lighting — features our data doesn't list for the Saab 9-3. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
Detailed powertrain specifications are not yet available for both models.
Space & Comfort
Boot space is 213L in the Mercedes-Benz SL-Class and 258L in the Saab 9-3, giving the Saab 9-3 a 45L advantage. The Saab 9-3 seats 4 vs 2.
0Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
11.6m diameter
Average
Based on 11.6m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
Interactive simulator: U-turns, parking & towing
Turning Circle
Kerb-to-kerb diameter. Smaller turns are easier in tight carparks and U-turns.
Average
Needs a 3-point turn (one reverse)
Needs about 10.3 m to swing round without stopping. Road is 9.0 m.
U-turn on a wide street
≥ 10 m: 3-point turn
U-turn on a standard street
7 m: 3-point turn
Standard parking bay
1.9 m wide: fits with room
Tight carpark aisle
6 m: careful, tight swing
Narrow laneway
3.5 m: no room to turn
Turning circle ratings
Standard widths: AU local streets carry ~5.5–7 m of carriageway; main roads ~9–12 m. AS 2890.1 carpark aisles are ~5.8–6.6 m for 90° bays (2.6 m wide × 5.4 m deep).
Road, aisle, swing and off-tracking figures are indicative estimates from the published turning circle. Verify in person before relying on them.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $3,962/year for the Mercedes-Benz SL-Class and $2,765/year for the Saab 9-3. That is a $1,197 annual difference in favour of the Saab 9-3.
Warranty: 5 years / 999,999km (Mercedes-Benz SL-Class) vs 3 years / 100,000km (Saab 9-3). The Mercedes-Benz SL-Class has longer coverage.
Who Should Buy Which?
Buy the Mercedes-Benz SL-Class if: You value a longer warranty, or prefer Mercedes-Benz's approach to design and ownership experience.
Buy the Saab 9-3 if: You need more boot space, want lower running costs, or prefer Saab's approach to design and ownership experience.
The Verdict
The Saab 9-3 takes 2 of 3 key spec categories. The Saab 9-3 will save you roughly $1,197 a year in fuel. If boot space matters, the Saab 9-3 has a clear edge. The Mercedes-Benz SL-Class adds peace of mind with a longer 5-year warranty. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Mercedes-Benz SL-Class and Saab 9-3?
The Mercedes-Benz SL-Class is the cheapest at $386,500 before on-road costs.
Which is the most fuel-efficient?
The Saab 9-3 uses the least fuel at 9.7L/100km on the combined cycle.
What are the ANCAP safety ratings?
None of Mercedes-Benz SL-Class and Saab 9-3 carry a published ANCAP rating yet, so there is no crash result to compare. Check back as they are tested.
Which has the most boot space?
The Saab 9-3 has the largest boot at 258L.
Which has the best warranty?
The Mercedes-Benz SL-Class has the longest warranty at 5 years / Unlimited.
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Disclaimer: All information in this comparison was believed to be correct at the time of publishing (20 April 2026). Prices are manufacturer recommended retail prices (RRP) and may vary by state, dealer, and options. Driveaway costs include estimated on-road costs for Victoria. Fuel economy figures are WLTP/ADR combined cycle. Specifications can change without notice. Always verify with the manufacturer before making a purchase decision. CarSorted does not accept payment for recommendations.
Auto-generated from CarSorted's specification data · 20 April 2026
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