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Middletown, MD

Middletown, MD ignition interlock: 2 certified installers

2 in town, 28 more within reach of Middletown

Verified · next review

2 certified centers in Middletown, run by 3 providers. Addresses below — call ahead, most centers fit devices by appointment.

Centers here
2
Providers
3
Monthly · national guide
$70
filed with Maryland
Where to go

Certified installation centers in Middletown

Sorted by how far they are from the center of Middletown. Where two providers work out of the same garage, we list the garage once with both names, and we include nearby towns when their center is closer than one of your own.

1
South Mountain Collision and Auto Center
2 Walnut ST, Middletown, MD 21769 · under 1 mile from the center of Middletown
Low Cost InterlockSmart Start
2
Interlock Installer 15
8865 Baltimore National Pike, Middletown, MD 21769 · 3 miles from the center of Middletown
Intoxalock
3
Bussard's Auto Repair outside Middletown
1510 W Patrick St, Frederick, MD 21702 · 4 miles from the center of Middletown
Intoxalock
4
Interlock Installer 14 outside Middletown
1460 W Patrick St, Frederick, MD 21702 · 4 miles from the center of Middletown
Intoxalock
5
Adrenaline Automotive LLC outside Middletown
4995 Winchester Blvd, Frederick, MD 21703 · 7 miles from the center of Middletown
Intoxalock
6
Ignition Interlock – Frederick outside Middletown
5716 Industry Lane Suite H2, Frederick, MD 21704 · 7 miles from the center of Middletown
Guardian InterlockLifeSafer
7
RoadGuard Interlock outside Middletown
5702 Industry Lane Unit A-24, Frederick, MD 21704 · 7 miles from the center of Middletown
RoadGuard Interlock
8
Aa Locksmith outside Middletown
7415 Grove Rd, Frederick, MD 21704 · 8 miles from the center of Middletown
LifeSafer
9
MAS Auto Repair outside Middletown
5608 Buckeystown Pike, Frederick, MD 21704 · 8 miles from the center of Middletown
Low Cost InterlockRoadGuard Interlock
10
Tire World of Riverside LLC outside Middletown
1291 Riverbend Way, Frederick, MD 21701 · 8 miles from the center of Middletown
Intoxalock
11
That Auto Shop outside Middletown
1341 Hughes Ford Rd, Frederick, MD 21701 · 8 miles from the center of Middletown
IntoxalockLifeSafer
12
Tool In Hand outside Middletown
7611 Devilbiss Bridge Road, Frederick, MD 21701 · 8 miles from the center of Middletown
LifeSafer
13
Frederick Auto Center Lto Llc outside Middletown
9025 Baltimore Road, Frederick, MD 21704 · 10 miles from the center of Middletown
IntoxalockLifeSafer
14
D&J Auto Enterprises/New Bill’s Auto Body outside Middletown
12440 A Creagerstown Rd, Thurmont, MD 21788 · 13 miles from the center of Middletown
Low Cost Interlock
15
Intercoastal Automotive outside Middletown
5221 Intercoastal Dr, Monrovia, MD 21770 · 15 miles from the center of Middletown
Intoxalock
16
Haberlein Automotive LLC outside Middletown
36 E Water St, Smithsburg, MD 21783 · 15 miles from the center of Middletown
Intoxalock
17
Burdette Brothers Inc outside Middletown
1909 Urbana Pike, Hyattstown, MD 20871 · 16 miles from the center of Middletown
Low Cost Interlock
18
Roys Quality Car Care outside Middletown
400 S Cannon Ave, Hagerstown, MD 21740 · 16 miles from the center of Middletown
LifeSafer
19
DEA LLC outside Middletown
825 S Potomac St, Hagerstown, MD 21740 · 16 miles from the center of Middletown
RoadGuard Interlock
20
Interlock Installer 10 outside Middletown
261 Frederick Street Ste A, Hagerstown, MD 21740 · 17 miles from the center of Middletown
IntoxalockSmart Start
21
Dave's Corner Auto Care outside Middletown
17600 Virginia Ave, Hagerstown, MD 21740 · 17 miles from the center of Middletown
IntoxalockLow Cost InterlockSmart Start
22
United Petroleum Service Center outside Middletown
890 Pennsylvania Ave, Hagerstown, MD 21742 · 18 miles from the center of Middletown
Intoxalock
23
Dwayne's Auto Repair outside Middletown
570 Northern Ave, Hagerstown, MD 21742 · 18 miles from the center of Middletown
Intoxalock
24
Interlock Installer 21 outside Middletown
15940 Lockwood Rd, Williamsport, MD 21795 · 18 miles from the center of Middletown
Intoxalock
25
Tikos Autobody & Repair outside Middletown
20331 Leitersburg Pike, Hagerstown, MD 21742 · 18 miles from the center of Middletown
LifeSafer
26
Guaranteed Truck & Auto Repair outside Middletown
13054 Salem Ave, Hagerstown, MD 21740 · 19 miles from the center of Middletown
IntoxalockLow Cost InterlockSmart Start
27
Twin Ridge Collision Center outside Middletown
1302 Rising Ridge Rd, Mount Airy, MD 21771 · 20 miles from the center of Middletown
Intoxalock
28
C&R Auto Repair and Exhaust outside Middletown
13210 Wisteria Dr, Germantown, MD 20874 · 23 miles from the center of Middletown
IntoxalockLow Cost Interlock
29
Golden Tag and Title outside Middletown
13238 Executive Park Ter, Germantown, MD 20874 · 23 miles from the center of Middletown
Smart Start
30
Wilson Tire and Auto outside Middletown
19815 Frederick Rd, Germantown, MD 20876 · 24 miles from the center of Middletown
Intoxalock

Compiled from providers’ own public location directories and deduplicated to unique physical places (how we build this index). Listing is not an endorsement, and no center pays to appear.

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Cost

What it costs in Middletown

Interlock pricing is set at state level, so what applies in Middletown applies across Maryland. These figures come from the price schedule filed with the state.

ChargeAmountWhat it covers
Installation$70–$150range across approved providers; many discount the initial install and account set-up
Monthly$70–$100monitoring, with calibration every 30 days
RemovalNot publishednot published separately by the MVA

State guidance figure · Ignition Interlock Program Report — Maryland MVA · checked 2026-08-23

The fees nobody quotes you over the phone

These are charged on top of the three above, and they are where a cheap-looking Maryland quote turns expensive.

FeeAmount
Program enrollment fee$47 (waivable on medical or food assistance)
  • Providers must fit a device within 10 days of a request and run a 24-hour emergency line.
  • Providers must offer 50% off rental rates to drivers on assistance.

What Maryland requires

Maryland runs one of the oldest interlock programs in the country, and it is built as an alternative to losing your license rather than an addition to it. You get a "J" restriction and report to your provider every 30 days; they send the MVA a report covering high readings, missed or failed retests, tampering and how often the car was used.

  • First offense: Set on referral by the MVA, a court or an administrative law judge; a repeat offender within five years faces a year of suspension or a year in the program, then a further restricted year
  • Lockout threshold: 0.025% — the MVA states the car will not start above that reading; missed service visits, tampering and bypass attempts also count as violations
  • Program run by: Maryland Motor Vehicle Administration

Full Maryland rules, providers and all 129 cities →

Frederick County · 2020–2022

Why Maryland orders these devices

An interlock order is not a judgment about you personally — it is what the state does with every case of this kind, and the reason sits in the crash record.

Fatal crashes involving a drinking driver
24
of 76 fatal crashes in Frederick County
Share of fatal crashes
32%
Maryland overall: 30%
People killed in those crashes
24
Frederick County, 2020–2022

Source: NHTSA Fatality Analysis Reporting System, 2020–2022. The count covers fatal crashes where police recorded that a driver had been drinking, which is narrower than the federal 0.08 BAC measure and therefore understates the real figure. Frederick County runs above the Maryland average, which is part of why the interlock requirement here is enforced the way it is. What the device changes is measurable too: a car fitted with one cannot be started over the limit, which is why the order attaches to driving privileges rather than to the sentence.

Nearby

Other cities in Maryland

If nothing in Middletown works for you, a center one town over often has an earlier appointment — the price does not change.

Questions

Interlock questions in Middletown

Where can I get an ignition interlock device installed in Middletown, MD?

We index 2 certified installation points in Middletown, run by Intoxalock, Low Cost Interlock, Smart Start. Addresses are listed above. Book with the provider your paperwork names, not the nearest one — a device approved in one state is not automatically approved in the next, and switching brands mid-term means a second installation fee.

How much does it cost to have an ignition interlock device installed in Maryland?

Maryland publishes its own figures rather than leaving it all to vendors: $70 to $150 to fit the device and $70 to $100 a month while it stays on the car. Removal is billed by the provider at the end of the term.

Can I drink one beer and still start the car in Maryland?

Almost certainly not. 0.025% — the MVA states the car will not start above that reading; missed service visits, tampering and bypass attempts also count as violations That is far below any drunk driving limit, which is the point: the device is not testing whether you are impaired, it is testing whether you drank. One drink shortly before a test is enough on most programs, and the fail is recorded whether or not you try again.

What does an ignition interlock device do?

An ignition interlock is a breath-alcohol tester wired into your car ignition. You blow into it before starting the engine; if your breath alcohol is above the state threshold, the engine will not start.

While you are driving, the device asks for rolling retests at random intervals. Every sample, skipped test, and lockout is recorded and sent to the agency monitoring your case.

All Maryland cities →Why Maryland requires it →What it costs in MarylandDUI lawyers in MarylandIf the device recorded a violation →