A comprehensive comparison of key specifications between the 2018 Alfa Romeo 4C 1 and the 2010 Alfa Romeo Brera 20 Jtdm. 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 2018 Alfa Romeo 4C 1 and 2010 Alfa Romeo Brera 20 Jtdm. Whether you're drawn to 2018 Alfa Romeo 4C 1's practicality or 2010 Alfa Romeo Brera 20 Jtdm's beauty, this comparison will help you make an informed decision:

Cars
	2018 Alfa Romeo 4C	2010 Alfa Romeo Brera 2.0 JTDm
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General
Build Start	2018	2010
ModelVariant	4C	Brera
Rebranded	€	€
Body Details
Body Style	19	19
Body type	2 seater fixed-head coupé	2+2 seater fixed-head coupé
Brakes
bmep (brake mean effective pressure)	2524.8kPa	2312.8kPa
Brakes F/R	VeDi/VeDi-S-ABS	VeDi/VeDi-S-ABS
Front brake diameter	305mm	330mm
Rear brake diameter	292mm	292mm
Chassis & Geomtry
Front suspension	I.DW.CS.ARB.	I.DW.
Length:Wheelbase Ratio	1.68	1.75
Rear suspension	I.MS.	I.MultiLi.
Turns Lock-to-Lock	2.700
Weight distribution	41% front
Dimensions
Fuel Tank Capacity	40litres	70litres
Ground clearance	114mm	mm
Height	1184mm	1341mm
Kerb weight	1118kg	1480kg
Length	3990mm	4413mm
Track/tread (front)	1638mm	1579mm
Track/tread (rear)	1603mm	1559mm
Weight	kg	kg
Wheelbase	2380mm	2525mm
Width	1867mm	1830mm
Engine details
Aspiration	Turbo	Turbo D.
Bore × Stroke	83 × 80.5mm	83 × 90.4mm
Bore/stroke ratio	1.03	0.92
Capacity	1.7 litre (1742 cc)	2 litre (1956 cc)
Catalytic converter	Y	Y
Compression Ratio	9.25:1	16.5:1
Crankshaft Bearings	5
Cylinders	Straight 4	Straight 4
Engine code		939 B 3000
Engine coolant	Water	Water
Engine layout	transverse	transverse
Engine manufacturer	Fiat	Fiat
Engine position	mid	front
Engine Type	turbocharged petrol	turbocharged diesel
Final drive ratio	4.12	3.55
Gearbox	6 speed manual	6 speed manual
Intercooler	Y
Specific output	136.1bhp/litre	85.9bhp/litre
Specific torque	200.92Nm/litre	184.05Nm/litre
Sump	wet sumped	wet sumped
Top gear ratio	0.62	0.62
Fuel Consump.
Carbon dioxide emissions		142.0 g/km NEDC
CO2 Effizienz (DE)		C
Economy	mpg	mpg
Fuel consumption	24/34/28 US MPG EPA city/highway/combined	7.1/4.4/5.4 l/100km urban/extra-urban/combined
Fuel system	direct petrol injection	common rail direct diesel injection
VED band (UK)		F
Performance
Acceleration 0-100km/h	s	8.8s
Acceleration 0-160km/h (100mph)	s	s
Acceleration 0-60mph	s	s
Acceleration 0-80km/h (50mph)	s	s
BHP	bhp	bhp
Drive wheels	rear wheel drive	front wheel drive
maximum power output	240 @ 6000 rpm	170 @ 4000 rpm
Maximum RPM	6500rpm	rpm
Maximum speed	km/h	218km/h
Maximum Torque	350 Nmlb/ft	360 Nmlb/ft
Power-to-weight ratio	214.93 PS/tonne (1000 kg)	115.09 PS/tonne (1000 kg)
Standing kilometre		30.2 s
Weight-to-power ratio	6.33kg/kW	11.81kg/kW
Prices
Price (when new)	€	€
Saftey
Wheels & Tyres
Tyres front		225/50 R 17
Tyres rear		225/50 R 17
Aerodynamics
Drag coefficient	0.335
Other
Number of doors	2	2
RAC rating	17.1	17.1
Steering	power assisted rack & pinion	power assisted rack & pinion
Unitary capacity	435.5cc	489cc
Valve gear	double overhead camshaft (DOHC), 4 valves per cylinder, 16 valves in total	double overhead camshaft (DOHC), 4 valves per cylinder, 16 valves in total

In conclusion, the 2018 Alfa Romeo 4C 1 and 2010 Alfa Romeo Brera 20 Jtdm 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.