Ignition Interlock Device (IID) in New Jersey
New Jersey uses the term "DWI" for impaired driving offenses. IID requirement: required for all dui offenses. First offense duration: 3 months (BAC 0.08-0.099%); 7-12 months (BAC 0.10-0.149%); 9-15 months (BAC 0.15%+). Monthly cost: $65-$110.
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Quick Answer
New Jersey requires IID for all DWI convictions. Since December 2019, New Jersey replaced license suspension with mandatory IID for most offenders under the new law. First offenders with BAC below 0.10% get 3 months IID; BAC 0.10%-0.149% get 7-12 months; BAC 0.15%+ get 9-15 months. Repeat offenders get 2-4 years.
IID Duration by Offense
| Offense | IID Duration |
|---|---|
| 1st Offense | 3 months (BAC 0.08-0.099%); 7-12 months (BAC 0.10-0.149%); 9-15 months (BAC 0.15%+) |
| 2nd Offense | 2-4 years |
| 3rd Offense | 2-4 years (after 8-year license suspension) |
| 4th+ Offense | Court-ordered duration (typically 2+ years) |
BAC threshold: Any DWI conviction — duration varies by BAC level
IID Cost Breakdown in New Jersey
| Item | Cost | Notes |
|---|---|---|
| Installation | $75-$150 | One-time fee. Takes about 1 hour. |
| Monthly Lease + Monitoring | $65-$110/mo | Includes device lease and monitoring. |
| Calibration | $25-$75 | Every 30 days. |
| Removal | $50-$100 | One-time fee when IID period ends. |
| Estimated Total (6 months) | $515-$910 | Install + 6 months lease + removal. |
| Estimated Total (12 months) | $905-$1,570 | Install + 12 months lease + removal. |
One-time
Lease + monitoring
Every 30 days
One-time
All-in estimate
All-in estimate
Approved IID Providers in New Jersey
Contact providers directly for current pricing and service center locations in New Jersey. Compare at least 2-3 providers before choosing — prices and service quality vary.
Restricted License with IID
Under New Jersey's 2019 law, IID replaces license suspension for most offenders. With IID installed, you can drive without restrictions (no destination limitations). This was a major shift from the prior law which imposed license suspension without IID.
Tampering / Circumvention Penalties
Tampering with an IID in New Jersey carries fines up to $1,000, extension of the IID requirement, and possible additional charges.
Early Removal
New Jersey does not allow early removal.
New Jersey-Specific Notes
New Jersey overhauled its DWI law in December 2019 — replacing license suspension with mandatory IID for most offenders. This was a landmark change: instead of losing driving privileges entirely, offenders now keep driving with IID. The IID duration is directly tied to BAC level, making higher-BAC offenders carry the device longer. New Jersey also has no 'DUI' — only 'DWI.'
Frequently Asked Questions
Is an IID required for a first DWI in New Jersey?
Does New Jersey still suspend your license for a DWI?
How much does an IID cost in New Jersey?
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