Ignition Interlock Device (IID) in South Dakota
South Dakota uses the term "DUI" for impaired driving offenses. IID requirement: required for repeat offenses only. First offense duration: Not required (unless BAC 0.17%+; then 6 months). Monthly cost: $60-$95.
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Quick Answer
South Dakota requires IID for second and subsequent DUI convictions. First-offense DUI does not require IID. The state also requires IID for any DUI involving a BAC of 0.17% or higher, even on first offense.
IID Duration by Offense
| Offense | IID Duration |
|---|---|
| 1st Offense | Not required (unless BAC 0.17%+; then 6 months) |
| 2nd Offense | 1 year |
| 3rd Offense | 1 year |
| 4th+ Offense | 2 years |
BAC threshold: 0.17% BAC for first offense; all repeat offenses
IID Cost Breakdown in South Dakota
| Item | Cost | Notes |
|---|---|---|
| Installation | $70-$150 | One-time fee. Takes about 1 hour. |
| Monthly Lease + Monitoring | $60-$95/mo | Includes device lease and monitoring. |
| Calibration | $25-$65 | Every 60 days. |
| Removal | $50-$100 | One-time fee when IID period ends. |
| Estimated Total (6 months) | $480-$820 | Install + 6 months lease + removal. |
| Estimated Total (12 months) | $840-$1,390 | Install + 12 months lease + removal. |
One-time
Lease + monitoring
Every 60 days
One-time
All-in estimate
All-in estimate
Approved IID Providers in South Dakota
Contact providers directly for current pricing and service center locations in South Dakota. Compare at least 2-3 providers before choosing — prices and service quality vary.
Restricted License with IID
South Dakota allows a restricted license with IID for work and essential driving.
Tampering / Circumvention Penalties
Tampering with an IID in South Dakota carries fines and extension of the IID requirement.
Early Removal
South Dakota does not allow early removal.
South Dakota-Specific Notes
South Dakota is one of the less strict states for first-offense IID — standard first-offense DUI does not require IID unless BAC was 0.17% or higher.
Frequently Asked Questions
Is an IID required for a first DUI in South Dakota?
How long do I need an IID in South Dakota?
How much does an IID cost in South Dakota?
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