Sentry Auto Group

  • MEDFORD: (781) 395-6400
  • DORCHESTER: (617) 825-8900
  • SHREWSBURY: (508) 845-7700

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Model Lineup

  • Mustang
  • Mazda MX-5 Miata
  • Mazda MX-5 Miata
  • Mustang
  • Fiesta
  • Starting at: $29,300
    MPG: 31 Hwy | 15 City
  • Starting at: $24,915
    MPG: 36 Hwy | 27 City
  • Starting at: $23,970
    MPG: 28 Hwy | 21 City
  • Starting at: $23,800
    MPG: 31 Hwy | 15 City
  • Starting at: $14,880
    MPG: 36 Hwy | 26 City
  • Starting at: $31,770
    MPG: 36 Hwy | 40 City
  • Starting at: $24,170
    MPG: 37 Hwy | 42 City
  • Starting at: $18,960
    MPG: 40 Hwy | 26 City
  • Starting at: $29,170
    MPG: 99 Hwy | 110 City
  • Starting at: $24,370
    MPG: 32 Hwy | 23 City
  • Starting at: $18,945
    MPG: 40 Hwy | 26 City
  • Starting at: $23,450
    MPG: 32 Hwy | 0 City
  • Starting at: $30,700
    MPG: 24 Hwy | 16 City
  • Starting at: $19,960
    MPG: 35 Hwy | 27 City
  • Starting at: $21,795
    MPG: 35 Hwy | 24 City
  • Starting at: $28,100
    MPG: 30 Hwy | 17 City
  • Starting at: $40,285
    MPG: 22 Hwy | 15 City
  • Starting at: $43,560
    MPG: 21 Hwy | 14 City
  • Starting at: $29,100
    MPG: 25 Hwy | 16 City
  • Starting at: $33,100
    MPG: 29 Hwy | 19 City
  • Starting at: $43,210
    MPG: 28 Hwy | 16 City
  • Starting at: $61,920
    MPG: 22 Hwy | 15 City
  • Starting at: $64,285
    MPG: 20 Hwy | 15 City
  • Starting at: $29,985
    MPG: 24 Hwy | 16 City
  • Starting at: $14,580
    MPG: 36 Hwy | 28 City
  • Starting at: $22,600
    MPG: 34 Hwy | 0 City
  • Starting at: $33,900
    MPG: 0 Hwy | 0 City
  • Starting at: $25,675
    MPG: 41 Hwy | 44 City
  • Starting at: $35,190
    MPG: 33 Hwy | 22 City
  • Starting at: $35,190
    MPG: 39 Hwy | 41 City
  • Starting at: $21,495
    MPG: 38 Hwy | 25 City
  • Starting at: $17,170
    MPG: 40 Hwy | 26 City
  • Starting at: $27,055
    MPG: 29 Hwy | 13 City
  • Starting at: $38,850
    MPG: 28 Hwy | 17 City
  • Starting at: $16,945
    MPG: 41 Hwy | 25 City
  • Starting at: $38,850
    MPG: 28 Hwy | 17 City
  • Starting at: $29,025
    MPG: 0 Hwy | 0 City
  • Starting at: $26,085
    MPG: 0 Hwy | 0 City
  • Starting at: $31,275
    MPG: 0 Hwy | 0 City
  • Starting at: $28,085
    MPG: 0 Hwy | 0 City
  • Starting at: $26,770
    MPG: 0 Hwy | 0 City
  • Starting at: $25,800
    MPG: 26 Hwy | 15 City
  • Starting at: $32,165
    MPG: 0 Hwy | 0 City
  • Starting at: $36,145
    MPG: 0 Hwy | 0 City
  • Starting at: $26,290
    MPG: 0 Hwy | 0 City
  • Starting at: $37,245
    MPG: 0 Hwy | 0 City
  • Starting at: $27,615
    MPG: 0 Hwy | 0 City
  • Starting at: $27,040
    MPG: 0 Hwy | 0 City
  • Starting at: $22,330
    MPG: 29 Hwy | 21 City
  • Starting at: $29,735
    MPG: 0 Hwy | 0 City
  • Starting at: $30,685
    MPG: 0 Hwy | 0 City
  • Starting at: $24,710
    MPG: 28 Hwy | 20 City
  • Starting at: $32,270
    MPG: 19 Hwy | 14 City
  • Starting at: $35,920
    MPG: 0 Hwy | 0 City
  • Starting at: $21,240
    MPG: 28 Hwy | 21 City

Welcome to Our Service Department

At Sentry Auto Group, our highly qualified technicians are here to provide exceptional service in a timely manner. From oil changes to transmission replacements, we are dedicated to maintaining top tier customer service, for both new and pre-owned car buyers! Allow our staff to demonstrate our commitment to excellence.


Service Hours

  • Monday 7:00am-6:00pm
  • Tuesday 7:00am-6:00pm
  • Wednesday 7:00am-6:00pm
  • Thursday 7:00am-6:00pm
  • Friday 7:00am-6:00pm
  • Saturday 7:00am-3:00pm
  • Sunday Closed

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Welcome to Sentry Auto Group

We Do It The "Right Way"

Let's face it - you can buy a car anywhere. Why is Sentry different? What does it mean to be "the right way to buy a car"?

"The right way to buy a car" is more than just an advertising tagline. It means that we won't run newspaper ads designed to trick you into coming in on a deal that's not real. When you do come in, it means we'll treat you like a valued guest. And by "the right way to buy a car," we aren't just referring to the actual buying. We mean it as a philosophy that extends to your service experience as well.

How do we do it "the right way?" We can't give away all our secrets, but we start by hiring nice people. (As someone once said, that's easier than training people to be nice). Then, we have a whole set of guidelines (the Sentry Standards) that we strive to follow.

Sentry Auto Group is your best source for new and used Mazda, Ford and Lincoln cars in Massachusetts. Customers from all over New England, including Greater Boston, Shrewsbury, and Worcester will find a large inventory of new and used Mazda, Ford and Lincoln models.

If you're looking to purchase a new or used vehicle, we always have great financing incentives. And if you'd rather lease, don't forget to check out our $0 Down Leases! That's right - NO money down!

Located in Medford, Dorchester and Shrewsbury, Sentry Auto Group is convenient to everyone in MA.

Sentry Auto Group comprises Sentry Ford LincolnSentry West Lincoln, Sentry Mazda and our used car store, Sentry AllBrands.