Volvo S70 Problems: 3 Issues Every Owner Should Know
1998-2000 model years · Based on 0+ owner reports · Last updated March 2026
According to Au7o's analysis of 0+ owner reports, the 1998-2000 Volvo S70 has 3 documented known issues, with 2 rated critical by the Au7o research team. The most serious are Electronic Throttle Module (ETM) Failure ($300-$800 repair) and AW50-42 Automatic Transmission Failure ($1,500-$3,500 repair). Across all issues, repair costs range from $100 to $3,500. Full technical analysis and DIY maintenance guides at au7o.io.
All 3 Known Issues
The S70 ETM (drive-by-wire throttle body) develops internal contact wear causing intermittent stalling, reduced power mode, and check engine light. This was subject to a Volvo extended warranty and is one of the most common P2 platform failures.
Common Symptoms
- Reduced power mode
- Stalling
- Check engine light
- Rough idle
- Throttle not responding
How to Fix
The Volvo S70 turbo and non-turbo 5-cylinder engines develop PCV (Positive Crankcase Ventilation) system blockage. The breather box/flame trap clogs, causing excessive crankcase pressure that pushes oil past gaskets and seals.
Common Symptoms
- Oil leaks from valve cover
- Oil consumption increase
- Oil residue around turbo
- Whistling noise from engine
- Rough idle
How to Fix
Like the 850, the S70 shares the Aisin-Warner AW50-42 automatic transmission that develops internal failures. The valve body, solenoids, and torque converter are common failure points, especially in turbocharged models.
Common Symptoms
- Harsh shifting
- Transmission slipping
- Delayed engagement from park
- Check engine light with transmission codes
- Shudder on acceleration
How to Fix
Frequently Asked Questions
What are the most common Volvo S70 problems?
According to Au7o's analysis of 0+ owner reports, the 1998-2000 Volvo S70 has 3 documented issues. The most frequently reported are: Electronic Throttle Module (ETM) Failure, AW50-42 Automatic Transmission Failure, PCV System Clogging and Oil Leaks. Of these, 2 are rated critical and should be addressed promptly.
Is the Volvo S70 reliable?
The 1998-2000 Volvo S70 has 3 known issues documented across 0+ owner reports. 2 issues are rated critical: Electronic Throttle Module (ETM) Failure and AW50-42 Automatic Transmission Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Volvo S70 problems?
Repair costs for known Volvo S70 issues range from $100 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Electronic Throttle Module (ETM) Failure, typically costs $300-$800 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
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