Mercedes-AMG GT vs Porsche 911: Head-to-Head Comparison

Comparison

Porsche 991 Carrera S

n=164 sold12-mo +13.8%

Avg Price

$84k

Range

$49k – $132k

Avg Mileage

37,103

Manual Premium

+28%

Avg Bids

36

Mercedes-Benz C190/R190 AMG GT

n=161 sold12-mo -6.2%

Avg Price

$97k

Range

$56k – $174k

Avg Mileage

20,704

Avg Bids

34

Porsche 992 GT3

n=156 sold12-mo +8.6%

Avg Price

$270k

Range

$186k – $347k

Avg Mileage

4,413

Manual Premium

+19%

Avg Bids

37

Porsche 991 Carrera

n=154 sold12-mo -10.1%

Avg Price

$82k

Range

$48k – $148k

Avg Mileage

40,299

Manual Premium

+20%

Avg Bids

34

Porsche 991 GT3

n=140 sold12-mo +10.3%

Avg Price

$179k

Range

$98k – $297k

Avg Mileage

15,959

Manual Premium

+55%

Avg Bids

35

Porsche 992 Carrera S

n=102 sold12-mo -21.3%

Avg Price

$154k

Range

$102k – $230k

Avg Mileage

13,428

Manual Premium

+21%

Avg Bids

35

Porsche 991 Turbo

n=101 sold12-mo -19.6%

Avg Price

$136k

Range

$82k – $230k

Avg Mileage

28,366

Avg Bids

33

Porsche 991 Carrera 4S

n=100 sold12-mo +11.4%

Avg Price

$89k

Range

$58k – $120k

Avg Mileage

37,204

Manual Premium

+18%

Avg Bids

38

Porsche 991 GT3 RS

n=97 sold12-mo +2.5%

Avg Price

$225k

Range

$160k – $299k

Avg Mileage

9,355

Avg Bids

39

Porsche 992 Turbo S

n=88 sold12-mo +17.2%

Avg Price

$282k

Range

$201k – $428k

Avg Mileage

7,076

Avg Bids

40

Porsche 992 GT3 RS

n=85 sold12-mo +5.3%

Avg Price

$417k

Range

$335k – $524k

Avg Mileage

2,124

Avg Bids

43

Porsche 991 GT2 RS

n=79 sold12-mo +24.6%

Avg Price

$569k

Range

$349k – $902k

Avg Mileage

4,730

Avg Bids

42

Porsche 991 Carrera GTS

n=75 sold12-mo +8.8%

Avg Price

$124k

Range

$81k – $174k

Avg Mileage

26,656

Manual Premium

+22%

Avg Bids

40

Porsche 991 Turbo S

n=75 sold12-mo +5.2%

Avg Price

$164k

Range

$90k – $329k

Avg Mileage

23,063

Avg Bids

37

Porsche 992 Carrera

n=74 sold12-mo -16.8%

Avg Price

$138k

Range

$92k – $209k

Avg Mileage

9,233

Manual Premium

+35%

Avg Bids

32

How to Choose

• The 911 holds value significantly better. Expect 10-20% depreciation over 5 years vs 30-50% for the AMG GT. Buy the AMG GT used, the 911 either way.
• The AMG GT's front-mid engine layout gives it a unique driving character — long nose, dramatic proportions, and visceral V8 power delivery.
• The 911's rear-engine layout provides superior traction and a more connected driving feel, especially in corners.
• The AMG GT R and GT Black Series are the collector picks. The Black Series has already bottomed and is appreciating.
• For daily driving, the 911 is more practical with its rear seats and front trunk. The AMG GT is more dramatic but less livable.

Frequently Asked Questions

AMG GT or 911 — which is faster?

The 911 Turbo S is faster in a straight line and around a track than the base AMG GT S. The AMG GT R closes the gap. The AMG GT Black Series (720hp) is faster than anything in the 911 lineup except the GT2 RS. On the street, both are more than fast enough.

Why does the AMG GT depreciate so much?

Mercedes-AMG volume production and generous lease terms flood the used market. The 911's limited allocation model and stronger brand loyalty keep used values higher. This depreciation makes the AMG GT an excellent used buy — you get more car per dollar.

Which is more reliable, AMG GT or 911?

Both are reliable by sports car standards. The 911 has a longer track record and simpler running costs. The AMG GT's M178 twin-turbo V8 is robust but more expensive to service. Neither will strand you, but the 911's maintenance costs are lower.

Is the AMG GT Black Series a good investment?

The Black Series (limited production, 720hp, flat-plane-crank V8) has already bottomed in depreciation and is appreciating. At $300K-$400K, it's a serious collector car that rivals the 911 GT2 RS in both performance and collectibility.