1977 Mercedes Sl 350 MOT Pass Rate
Pass rate for Sl 350 models manufactured in 1977, based on 77 real MOT test results.
Data from official DVSA MOT testing records
1977 Mercedes Sl 350 MOT Analysis
The 1977 Mercedes Sl 350 has an MOT pass rate of 74.0% based on 77 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 96,256 miles on the odometer. With a 26.0% failure rate, the 1977 Sl 350 is rated as "Very Good" for MOT reliability.
The leading cause of MOT failure for the 1977 Mercedes Sl 350 is Body, Structure and General Items, responsible for 3.9% of failures. Body and structure failures include excessive corrosion, sharp edges, loose panels, and damage to the vehicle frame. Rust is the primary concern, especially on older vehicles or those exposed to road salt. Typical repair costs range from £100–500+.
Top failures specific to 1977 models only. The overall Sl 350 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Body, Structure And General Items | 3.9% | 3 |
Failures per 10,000 Miles
avg. 96,256 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Body & Structure | 0.40 | 3.9% | 3 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1977 Mercedes Sl 350 has an MOT pass rate of 74.0% based on 77 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 96,256 miles on the odometer. With a 26.0% failure rate, the 1977 Sl 350 is rated as "Very Good" for MOT reliability.
If you own or are considering buying a 1977 Mercedes Sl 350, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to body, structure and general items: Inspect sills, wheel arches, door bottoms, and the chassis for rust. Surface rust is acceptable but structural corrosion or holes will fail. Check that all doors, bonnet, and boot close securely. With an average mileage of 96,256 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Body, Structure and General Items — 3.9% of failures
Body, Structure and General Items issues account for 3.9% of MOT failures on 1977 Mercedes Sl 350 models. Body and structure failures include excessive corrosion, sharp edges, loose panels, and damage to the vehicle frame. Rust is the primary concern, especially on older vehicles or those exposed to road salt. Typical repair costs: £100–500+. Pre-MOT check: Inspect sills, wheel arches, door bottoms, and the chassis for rust. Surface rust is acceptable but structural corrosion or holes will fail. Check that all doors, bonnet, and boot close securely.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.