Where each one leads
Ford Mustang Convertible
- On Canada's official test the most frugal 2023 Ford Mustang Convertible uses 10.2 l/100 km, the 2015 Mercedes-Benz SL 12.4.
Mercedes-Benz SL
Ahead on none of the like-for-like measures.
Only measures that do not depend on how many cars were sold: pass and failure rates against cars of the same age, ratings, fuel use and CO₂. How we compare
At a glance
| Ford Mustang Convertible | Mercedes-Benz SL | |
|---|---|---|
| Model years in the US safety record | 1994–2003 | 1990–2022 |
EEA new-car registrations (CC BY 4.0) · DVLA licensed vehicles (OGL v3.0) · RDW (CC0) · Traficom (CC BY 4.0) · generations: Wikidata (CC0).
Reliability and problems
| Ford Mustang Convertible | Mercedes-Benz SL | |
|---|---|---|
| UK MOT first-time pass rate | — | 83% |
| … against cars of the same age | — | +29% |
| US owner complaints | 139 | 41 |
| Most complaints about | Engine and engine cooling | Electrical system |
| Model year with most complaints | 2003 (35) | 1994 (15) |
| Manufacturer service bulletins | 37 | 73 |
| NHTSA defect investigations | 7 | — |
Complaint, recall and bulletin counts grow with the number of cars sold and are not adjusted for it. UK MOT: DVSA anonymised MOT results (OGL v3.0); New York: DMV inspections; complaints, recalls, bulletins and investigations: NHTSA (public domain); odometer: RDW (CC0).
Fuel, emissions and price
| Ford Mustang Convertible | Mercedes-Benz SL | |
|---|---|---|
| Official combined fuel use, Canada | 10.2 l/100 km (2023) | 12.4 l/100 km (2015) |
Canada: NRCan Fuel Consumption Ratings, most frugal version of the latest year (OGL Canada). Europe: EEA monitoring of new-car CO₂ and on-board fuel meters (OBFCM), CC BY 4.0. Price: RDW catalogue price (CC0). Finland: Traficom (CC BY 4.0).