A comprehensive comparison of key specifications between the 1953 Ac Petite and the 2017 Bmw 420D Xdrive Coupe. To facilitate a clear understanding, we've organized the essential data into a concise table for your convenience.

To sum it up, we've put together a convenient table below, summarizing the key specifications of 1953 Ac Petite and 2017 Bmw 420D Xdrive Coupe. Whether you're drawn to 1953 Ac Petite's practicality or 2017 Bmw 420D Xdrive Coupe's beauty, this comparison will help you make an informed decision:

Cars
	1953 AC Petite	2017 BMW 420d xDrive Coupé
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General
Body Details
Body type	2 seater sedan/saloon	2+2 seater fixed-head coupé
Brakes
Brakes F/R	-/Dr	VeDi/VeDi-S-ABS
Rear brake diameter	178 mmmm
Chassis & Geomtry
Length:Wheelbase Ratio	1.71	1.65
Dimensions
Ground clearance	159mm	145mm
Height	1346mm	1392mm
Kerb weight	381kg	1615kg
Length	3124mm	4640mm
Track/tread (rear)	1067mm	1589mm
Wheelbase	1829mm	2810mm
Width	1397mm	1825mm
Engine details
Aspiration	Normal	Turbo D.
Bore × Stroke	70 × 90mm	84 × 90mm
Bore/stroke ratio	0.78	0.93
Capacity	0.3 litre (346 cc)	2 litre (1995 cc)
Catalytic converter	N	Y
Cylinders	1	Straight 4
Engine code	27B
Engine coolant	Other	Water
Engine layout	unknown	longitudinal
Engine manufacturer	Villiers	BMW
Engine position	rear	front
Engine Type	naturally aspirated petrol	turbocharged diesel
Gearbox	3	6
Specific output	23.4bhp/litre	94bhp/litre
Sump	wet sumped	wet sumped
Fuel Consump.
Performance
Drive wheels	rear wheel drive	all wheel drive
maximum power output	8.2 PS (8.1 bhp) (6 kW)	190 PS (187.5 bhp) (140 kW)at 4000 rpm
Maximum speed	64km/h	236km/h
Power-to-weight ratio	21.56 PS/tonne (1000 kg), 15.85 kW/tonne (1000 kg), 21.26 bhp/tonne (1000 kg), 0.01 bhp/lb	117.71 PS/tonne (1000 kg), 86.58 kW/tonne (1000 kg), 116.1 bhp/tonne (1000 kg), 0.05 bhp/lb
Weight-to-power ratio	63.08 kg/kW, 105.36 lb/bhpkg/kW	11.55 kg/kW, 19.29 lb/bhpkg/kW
Prices
Saftey
Wheels & Tyres
Tyres front	8 x 4	225/50 R 17 94W
Tyres rear	18 x 3.25	225/50 R 17 94W
Aerodynamics
Other
Number of doors	2	2
RAC rating	3.0	17.5
Unitary capacity	346cc	498.75cc
Valve gear	two stroke (TS), 0 valves per cylinder, 0 valves in total	double overhead camshaft (DOHC), 4 valves per cylinder, 16 valves in total

In conclusion, the 1953 Ac Petite and 2017 Bmw 420D Xdrive Coupe are two distinct cars and your choice ultimately boils down to your individual preferences and priorities. We hope this analysis aids you in your automotive journey, helping you find the perfect fit for your needs and desires.